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Doctor insights on: Birth Control Antibiotics Plan B

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Can you tell me about antibiotics, birth control and plan b?

Can you tell me about antibiotics, birth control and plan b?

Can't cover that: Many topic in 400 characters or fewer. Will share about plan b. Potential se’s w emergency contraception: tender breasts; changes in menstrual flow (spotting, bleeding, early or late period or spotting instead of period); loose stools; dizziness; headache; nausea/ vomiting; abdominal discomfort or feeling tired. If you develop chest tightness, difficulty breathing, swelling of lips, mouth, throat –. ...Read more

Dr. Jeff Livingston
2,399 doctors shared insights

Contraception (Definition)

Contraceptiion is a means of preventing conception (or fertilization). There are hormonal and non hormonal methods of preventing sperm and egg from meeting. Talk to your doctor or clinic about what options are best for you. There are short acting methods (condoms, pills, patch, ring) and long ...Read more


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On birth control. On antibiotics. Had sex. Took Plan B pill. Will it be effective?

On birth control. On antibiotics. Had sex. Took Plan B pill. Will it be effective?

Plan B + antibiotic: + BCP. Antibiotics which can affect Plan B: ampicillin, cotrimoxazole (in Bactrim), tetracycline, & clarithromycin. Did you take oral contraceptives regularly? How long after sex did you take the Plan B. Plan B One-Step is up to 89 % effective when taken within 72 hours (3 days) after unprotected sex. It can reduce chance of pregnancy by up to 95% if used within 24 hours. It continues to reduce > ...Read more

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Had sex on day 17 of cycle. On birth control & we used a condom that didn't break, but was also 1st day on antibiotics Zithromax250. Do I need plan B?

Had sex on day 17 of cycle. On birth control & we used a condom that didn't break, but was also 1st day on antibiotics Zithromax250. Do I need plan B?

No: No you don't need To Plan B. Zithromax may reduce the effectiveness of the BCP but risk is very small. And you used condom. That makes the risk zero. So you do not need To Plan B ...Read more

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If I took plan b on Saturday afternoon and then started uti antibiotics yesterday afternoon will this affect the plan b? I ask because my doctor told me this pill cancels out birth control.

If I took plan b on Saturday afternoon and then started uti antibiotics yesterday afternoon will this affect the plan b? I ask because my doctor told me this pill cancels out birth control.

Only @ same time: The Plan b has been absorbed and has done its work. Continued daily use of oral contraception when taken at the same time as the antibiotics will be ineffective as the antibiotics are preferentially absorbed. ...Read more

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I took antibiotics (Amox-Clav) for two days. The last time I took it was two days ago. I had unprotected sex, but am on birth control, plan b?

I took antibiotics (Amox-Clav) for two days. The last time I took it was two days ago. I had unprotected sex, but am on birth control, plan b?

????????????????????: For you to get the most from the site you need to post background information on an issue and ask a clear question related to that info. Please start over and clarify your question. ...Read more

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Was on antibiotics 3 days Next 2 days late on birth control by 8 hrs ea. got back on schedule Had sex 3 days later used back up&1.5 plan b, no period?

Was on antibiotics 3 days Next 2 days late on birth control by 8 hrs ea. got back on schedule Had sex 3 days later used back up&1.5 plan b, no period?

Unlikely pregnant: Sounds more like your hormones are a little scrambled from all the changes this month. You can take a pregnancy test to be sure, but I am betting next month all will go back to normal. :) ...Read more

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Unprotected sex while on antibiotics... Should I take plan b? I am usually pretty paranoid about unprotected sex, but 2 days ago I had unprotected sex. My partner pulled out. I am on birth control, and have been for years, but I had a sinus infection and h

Unprotected sex while on antibiotics... Should I take plan b? I am usually pretty paranoid about unprotected sex, but 2 days ago I had unprotected sex. My partner pulled out. I am on birth control, and have been for years, but I had a sinus infection and h

Your : Your antibiotics may have increased the metabolism of your birth control pills. It may decrease the effectiveness of your birth control pills. You are probably ok, but if absolute contraception is your goal, it might be advisable to use plan b. Best wishes. ...Read more

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If I'm on birth control, is it necessary to take plan b?

If I'm on birth control, is it necessary to take plan b?

Not if you have: Been on your oral contraceptive long enough for it to be effective. Take care. ...Read more

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What are the emotional effects of birth control plan b?

What are the emotional effects of birth control plan b?

Emotions: Birth control is and emotional transaction. Not like buy milk. The mental stress of trying to control your body is enough burden. However, Progesterone found in birth control pills and Plan B can cause mood changes sometimes similar to those of pms. ...Read more

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Can Plan B mess up my birth control pills?

Can Plan B mess up my birth control pills?

Plan B: Can be used whether you are taking oral contraceptives. ...Read more

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Does Plan B work if you are on another oral birth control pill?

Does Plan B work if you are on another oral birth control pill?

Plan B One Step: Can be taken with regular oral contraceptives. However, if you are taking oral contraceptives consistently & correctly — if would obviate the need for Plan b. ...Read more

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I'm on birth control and took plan b, should I worry about being pregnant?

I'm on birth control and took plan b, should I worry about being pregnant?

Not excessively.: You sound protected against undesired pregnancy — however do check urine pregnancy tests and see your gynecologist for proper diagnosis and management. ...Read more

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Is it possible to find out if birth control pill failed in time to use plan b?

Is it possible to find out if birth control pill failed in time to use plan b?

No: Plan b needs to be taken within 72 hours of intercourse. It would take a lot longer than that to determine if you were pregnant from that episode of intercourse. ...Read more

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Is plan B birth control safe and how long after unprotected sex can u take it?

Is plan B birth control safe and how long after unprotected sex can u take it?

Plan B: Hi, it is safe and u should take at as early as 12 hours after sex but can be taken up to 72 hours after sex but it's less effective, but if you are sexually active it's best to choose a regular birth control and also don't forget the protection. ...Read more

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Should I take the Plan B pill if I've been on Lo Lestrin Fe (birth control) for 2 weeks?

Should I take the Plan B pill if I've been on Lo Lestrin Fe (birth control) for 2 weeks?

Likely not: Lo Lestrin Fe is effective after 7 continuous days of use. But it must be taken properly during those seven days. So at 14 days (2wks) you should fine. But if you believe that you did not take Lo Lestrin Fe properly then Plan B can be used if you believe there was contraceptive failure (not taking Lo Lestrin Fe properly). ...Read more

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I've beenbeen on birth control for 1.5 months. If I have unprotected sex should I take plan b?

I've beenbeen on birth control for 1.5 months. If I have unprotected sex should I take plan b?

If you mean you have: Been OFF birth control, then you should get a reliable method of contraception. If you had intercourse within the last 2 days and you are off birth control, then get plan B ASAP. If you have been ON birth control for 1.5 months, you are protected from pregnancy. You do not need a backup method to prevent pregnancy. BUT you are not protected from sexually transmitted infection. Condoms are best4this ...Read more

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What can I do if my boyfriend ejaculated in me. Can I take the Plan B pills while im on birth control?

What can I do if my boyfriend ejaculated in me. Can I take the Plan B pills while im on birth control?

Yes: You can take Plan B while taking bcp but it is usually not needed if you are taking birth control pills correctly and you don't have any additional risk factors for failure of birth control pills such as obesity. ...Read more

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Do I need to takes birth control pill, Minastron, if I took Plan B because I forgot to take Minastrin this morning?

Do I need to takes birth control pill, Minastron, if I took Plan B because I forgot to take Minastrin this morning?

Yes: If you forget your birth control pill, you should take it as soon as you remember it. However, if you don't remember to take it until time for the next one, you should not take two at once. You should just take the one and consider the missed one skipped. The trick to birth control is that it HAS TO BE taken at the same time every day. If not, you risk breakthrough bleeding and pregnancy. ...Read more

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I did not wait 10 minutes after inserting the spermacide, but I started birth control 10 days ago. Do I need plan b?

I did not wait 10 minutes after inserting the spermacide, but I started birth control 10 days ago. Do I need plan b?

Depends : Whether u need Plan B depends in part on where u were in ur menstrual cycle when u started your pills. If this was a start at any time other than the week after ur period started, Plan B would be a good idea but if u started it within that first week, u should be fine. Understand that if u take Plan B u will have irregular/abnormal bleeding even on the pill and should just keep taking them ...Read more

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Can you take a Plan B pill and still take your normal dosage of birth control pill on the same day? What would happen?

Increased sideeffect: It's not advisable to take both Plan B and a birth control pill together. Either regimen if taken properly lowers the risk of pregnancy. Taking these together increase risks of side effects which includes heavy/irregular menstrual bleeding, fatigue, abdominal pain/ cramps, breast tenderness, diarrhea, stomach problems. Please practice safe sex. Use condoms. Stay safe. ...Read more

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I'm taking birth control, sometimes an hour later than usual, still works or should I take plan b if I had unprotected sex?

I'm taking birth control, sometimes an hour later than usual, still works or should I take plan b if I had unprotected sex?

You should be okay: Varying the time of birth control dose by an hour or so daily is not significant enough to alter its effectiveness, as long as you continue to take your daily dose. Missing a full day or two does reduce its effectiveness as well as some medications. With unprotected sex, you are still at risk for sexually transmitted infection so I do recommend both. ...Read more

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How effective is taking plan b & taking your birth control pill the same day as taking plan b? Do they cancel each other out?

How effective is taking plan b & taking your birth control pill the same day as taking plan b? Do they cancel each other out?

Plan B: Depending on the kind of birth control pill, they contain similar hormones related to progesterone, levonorgestrel. It isn't necessary to take plan b if you haven't missed 2 or more birth control pills in a row. Plan B is 85% effective if taken within 72 hours and 95% effective within 24 hours, less effective in women with BMI's over 35. ...Read more

Dr. Gregory Moneta
4 doctors shared insights

Birth Control (Definition)

Also known as contraception, birth control is a method to prevent pregnancy. Some methods of birth control include a vasectomy, tubal ligation, oral contraceptive pills, vaginal rings, hormone injections, condoms, diaphragms, sponges, ...Read more


Dr. John Leander Po
1,117 doctors shared insights

Antibiotic (Definition)

An antibiotic is a medicine that slows, stops, or kills germs. The germs are usually bacteria causing an infection in a person, so the person uses antibiotics to help his body get ...Read more