Q: i did a pregnancy blood test 20 days after my last unprotected intercourse. it came negative (<0.1). can i still be pregnant?

Yes: You may have done your home pregnancy test too early. They usually turn positive when you are about one week late. Repeat it then.

Q: how soon after sex can i get a pregnancy blood test ?

Depends on the cycle: Pregnancy test blood or urine only becomes positive after implantation, that is when fertilized egg has attached to the wall of uterus it takes 6to12 days after ovulation average time 9days so if you are pregnant blood pregnancy test becomes positive 3to4 days after implantation or 10to11 days after fertilization and ovulation it all depends what time during your menstrual cycle you have sex.

Q: how soon after intercourse can a blood test detect pregnancy?

After missed period: Conception, as defined by the generation of a fertilized ovum, occurs within day or so of the sex. However, it takes about two weeks for the embryo to make enough HCG to produce a positive pregnancy test. Blood test may be done a day after a missed period. Home pregnancy tests should be done 4-5 days after the missed period. Use first morning urine and follow instructions for the test carefully.

Question 1

does the pregnancy blood test is accurate 1 month after intercourse?

Accepted Answer

Yes:  The results of a pregnancy test should be accurate one month after sexual intercourse took place.

Question 2

so 1 month after intercourse i got negative in pregnancy blood test, it accurate? so the bloateness, loss of appetite, and vomiting when i wake up, thightening of stomach is not pregnancy anymore? maybe some medical issues?

Accepted Answer

Tests are accurate: Pregnancy tests are very accurate and not affected by foods, herbs, common illnesses, sexually transmitted diseases, or medications. A home urine test gives a reliable result by 3 weeks after sex (3 weeks after when conception might have happened) or 1 week after missing a period. If still worried, can test one more time with a home urine test, if no period comes after another week.

Question 3

how many weeks after intercourse is enough to take pregnancy blood test? is the result of that is accurate?

Accepted Answer

~2 weeks: It takes time for the sperm to seek out/find the egg. It takes more time for that egg/sperm complex to create a tissue mass that makes its way to the womb &amp; attach. It then must make enough hormones to enter the blood &amp; turn urine or blood tests positive. Two weeks is about the earliest you would expect to see a positive.

Question 4

i take pregnancy blood test 1 month after intercourse, it is negative. but i still feel vomiting because of the gross feeling, bloated. is the test is accuarte?

Accepted Answer

By 1 mo.=yes: If the exposure you question occurred 1 month before the test it would pick uup hormones created by a pregnancy related to that exposure. Nausea/vomiting/bloating are non specific symptoms that can be associated with a number of other issues.

Question 5

took a pregnancy blood test 15 days after sex and it was negative. took a pregnancy test 21 days from the day i had sex and it was negative. am i in the clear? my blood test was below two on day 16.

Accepted Answer

Not pregnant: Pregnancy tests are very accurate and not affected by foods, herbs, common illnesses, sexually transmitted diseases, or medications. A correctly done urine test gives a reliable result 3 weeks after sex (3 weeks after when conception might have happened) or 1 week after missing a period. If still worried, can test one more time with a home urine test, if no period comes after another week.

Question 6

how many days after sex can you get a pregnancy blood test taken? i had one done 19 days after sex and a late period. came back negative. accurate?

Accepted Answer

Likely: Conception, as defined by the generation of a fertilized ovum, occurs within day or so of the sex. However, it takes about two weeks for the embryo to make enough HCG to produce a positive pregnancy test. Blood test may be done a day after a missed period. Home pregnancy tests should be done 4-5 days after the missed period. If the result is negative repeat the test in 4-5 days. Use first morning urine and follow 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.

Question 7

did a blood test 16 days after intercourse. result= negative. is this accurate enough? its been 12 weeks since we last had intercorse and kept having my menstruation. the last menstruation was very heavy. is there chance of pregnancy?

Accepted Answer

Blood test : Please provide details ..what blood test?

Question 8

i did a pregnancy blood test 20 days after my last unprotected intercourse. it came negative (<0.1). can i still be pregnant?

Accepted Answer

Yes: You may have done your home pregnancy test too early.  They usually turn positive when you are about one week late.  Repeat it then.

Question 9

how soon after sex  can i get a pregnancy blood test ?

Accepted Answer

Depends on the cycle: Pregnancy test blood or urine only becomes positive after implantation, that is when fertilized egg has attached to the wall of uterus it takes 6to12 days after ovulation average time 9days
so if you are pregnant blood pregnancy test becomes positive 3to4 days after implantation  or 10to11 days after fertilization and ovulation
it all depends what time during your menstrual cycle you have sex.

Question 10

how soon after intercourse can a blood test detect pregnancy?

Accepted Answer

After missed period: Conception, as defined by the generation of a fertilized ovum, occurs within day or so of the sex. However, it takes about two weeks for the embryo to make enough HCG to produce a positive pregnancy test. Blood test may be done a day after a missed period. Home pregnancy tests should be done 4-5 days after the missed period. Use first morning urine and follow instructions for the test carefully.

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Doctor answers about:

Pregnancy blood test accurate two weeks after intercourse

A member asked:

Does the pregnancy blood test is accurate 1 month after intercourse?

A member asked:

So 1 month after intercourse i got negative in pregnancy blood test, it accurate? so the bloateness, loss of appetite, and vomiting when i wake up, thightening of stomach is not pregnancy anymore? maybe some medical issues?

A member asked:

How many weeks after intercourse is enough to take pregnancy blood test? is the result of that is accurate?

A member asked:

I take pregnancy blood test 1 month after intercourse, it is negative. but i still feel vomiting because of the gross feeling, bloated. is the test is accuarte?

A member asked:

Took a pregnancy blood test 15 days after sex and it was negative. took a pregnancy test 21 days from the day i had sex and it was negative. am i in the clear? my blood test was below two on day 16.

A member asked:

How many days after sex can you get a pregnancy blood test taken? i had one done 19 days after sex and a late period. came back negative. accurate?

A member asked:

Did a blood test 16 days after intercourse. result= negative. is this accurate enough? its been 12 weeks since we last had intercorse and kept having my menstruation. the last menstruation was very heavy. is there chance of pregnancy?

A member asked:

I did a pregnancy blood test 20 days after my last unprotected intercourse. it came negative (<0.1). can i still be pregnant?

A member asked:

How soon after sex can i get a pregnancy blood test ?

A member asked:

How soon after intercourse can a blood test detect pregnancy?

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