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Fall River, MA
A 31-year-old female asked:

How soon after having intercourse can i take a pregnancy test? i really don't want to wait for when my period would be due, it is still 8 days away. i had unprotected sex 15 days ago, if i were pregnant would it show a positive result on a pregnancy test

2 doctor answers6 doctors weighed in
Dr. Kenneth Weston
Family Medicine 42 years experience
Pregnancy tests. : Urine pregnancy tests have become increasingly sensitive. 15 days after intercourse, it is likely the test would be positive if you were pregnant. It would be worth repeating if you had anything but a normal menstrual period. Menstrual periods are not absolute methods to determine pregnancy. Women can have periods the first month they are pregnant though generally shorter, lighter.
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Dr. Gurmukh Singh
Pathology 51 years experience
Too soon to test: Conception occurs within day or so of the sex. It takes about 3 weeks for the embryo to make enough HCG for 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.
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Related questions

A female asked:
When do early pregnancy symptoms appear ? Can it appear a week after intercourse? When to take a test blood or urine? Period is due 8 days and 5 dpo
Dr. Vahe Yetimyan
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It appears: 10-14 days after conception. You take a test a day after a missed period.
Created for people with ongoing healthcare needs but benefits everyone.
A 27-year-old female asked:
I can't wait on my next period .. I want to know if im pregnant... In how many days after intercourse can I use pregnancy test?
Dr. Michael Sparacino
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See below: You can see your doctor, who can perform a serum quantitative test. Anything greater than 10 miu/cc HCG indicates pregnancy. The newer home pregnancy... Read More
Created for people with ongoing healthcare needs but benefits everyone.
View all answers
A female asked:
Blood pregnancy test 7 days after intercourse and 8 days before period. Will the results be reliable ??
Dr. Gurmukh Singh
Pathology 51 years experience
No, too soon to test: 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... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 25-year-old female asked:
I am 18 days after the intercourse and 2 day after my period was due. I took a BFP EARLY PREGNANCY TEST STRIPS this morning can I trust the result?
Dr. Anne Phelan-adams
A Verified Doctoranswered
A US doctor answeredLearn more
If the test was: ...positive, you can "trust" the result. If the test was negative, then, if you don't get your period in another few days, you should repeat the tes... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 22-year-old female asked:
Had intercourse on the 13th. Light spotting for 2 days and light cramping. Period due the 22nd. When can i take a pregnancy test? How soon?
Dr. Gurmukh Singh
Pathology 51 years experience
After missed period: A blood test may be done a day after a missed period. Home pregnancy test should be done 5 or more days after a missed period, use first morning urin... Read More
Created for people with ongoing healthcare needs but benefits everyone.
Last updated Dec 13, 2019

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