My last period was jan 2 and ended on jan 7. I had protected sex on jan 8 and now my period is four days late and I got a negative pregnancy test?

Wait a little. Many things can delay your period, including simple stress. Pregnancy sounds unlikely from what you describe. If you go three months without a period than a workup is indicated.
Periods vary. But if you're concerned you may be pregnant, repeat your test in a few days. But with protected sex, its very unlikely that you are.
Watchful waiting! Low probability of pregnancy as you tell it? Recheck in a week.

Related Questions

I am 26 years old on birth control only one ovary I had un protected sex during my last period and have now missed my period 3 negative pregnancy test?

Likely not pregnant. Pregnancy tests are quite accurate. Since you are on birth-control and the test was negative, odds are, you aren't pregnant. There are many other causes of a missed period besides pregnancy. For example, sometimes your birth control, stress or dieting can make you miss periods. To be on the safe side, repeat the pregnancy test in about a week. Best wishes! Read more...

I am 41 and my cycle has been crazy for over a year now. From 27-45 days. Last period was 7 weeks ago. Negative pregnancy test. What's up?

Might be... You are already at that period of the female's life where menopause is possible, however, the final determinant would be absence of periods for a year. Follow up with your doctor or GYN provider in order to get labs as it is estimated needed especially due to prolonged periods for that long. Read more...
Ovulation issue. As women enter their forties they often times have irregular ovulation, which can lead to skipped periods, irregular periods or very heavy periods. A low dose birth control can help. Also if you're done having children, an endometrial ablation can eliminate them altogether without altering your hormonal status. Read more...

Last month I came on my period 17days early and it has now been 36 days since my last period. I had a negative pregnancy test last week?

Menstrual. irregularities are not uncommon. Anovulatory cycles are one cause. If you did the pregnancy test correctly, you are not pregnant. You may consult this site for more information on this topic. http://www.nichd.nih.gov/health/topics/menstruation/conditioninfo/pages/causes.aspx. Read more...

I have ovulated at least twice with no period (last period was march 17). Is this normal? I had a miscarriage in december. Two negative pregnancy test

Ovulation w/o bleed. This can happen and be normal, but it is uncommon. The failure to develop bleeding after ovulation can be due to a Progesterone deficiency, so that should be evaluated. Read more...
NO, it's not. It's not normal to ovulate and then not menstruate unless someone is pregnant. It's imperative to see a board certified reproductive endocrinologist who can get to the bottom of this as soon as possible. Read more...

Last period was may 9th. 1 negative pregnancy test. Period is 8days late. No symptoms. Could I be pregnant? How long do I wait for 2nd test?

Wait. If lmp was 5/9 it really doesn't sound like you are 8 days late for june. That would amount to a 22 day cycle which is a little short for most women. Wait another week and if no menses, repeat the pregnancy test. Read more...

Took plan b a day after my last period ended The guy didn't ejaculate My period was suppose to start Friday & its not here yet negative pregnancy test?

See below. If you took plan B within 72 hours of sex, you are at minimal risk for pregnancy. You may repeat the pregnancy test in 4-5 days. Use first morning urine and follow the instructions for the test carefully. If you do not wish to be pregnant, use contraception all the time, every time. You may consider implanted contraceptive, or IUD. Practice safe sex. Get HPV vaccine. Read more...