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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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How Soon After Intercourse Be Pregnancy Detected?

my question is that the only time i had sex was on the 21st of dec. i was suppose to get my period on the 26th of dec. well i spotted light pink blood when i wiped. well after that i took a pregnancy test on the 2nd of jan. it turned out positive. went to dr and theirs did also. they gave me a blood test and it came back positive also with my hug being 28.2 said they want me to come back in in the morning to redraw which would be the 5th of jan. my question is how far am i and how did i find out so early. whens the ealierst you can find out after having sex and me only being 12 days after having sex positive? and are my hug levels good for that
Mon, 12 Jan 2015
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General & Family Physician,  's  Response
Hi,
I understand your query.
- Usually ovulation is 14 days prior to expected menses ( 12th December in your case.)in that case 21st December comes in safe period.
- So conception with sex on 21st does not seem to be possible- unless you have irregular period./ the conception was earlier.
earliest detection of pregnancy is 12-14 days after fertilization , by blood pregnancy test & 3 weeks after fertilization by urine pregnancy test. - Your HCG levels suggest 2 weeks gestation. THey will confirm the result after second blood test- The Hcg level doubles in 48 hours in pregnancy.
Thanks.
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How Soon After Intercourse Be Pregnancy Detected?

Hi, I understand your query. - Usually ovulation is 14 days prior to expected menses ( 12th December in your case.)in that case 21st December comes in safe period. - So conception with sex on 21st does not seem to be possible- unless you have irregular period./ the conception was earlier. earliest detection of pregnancy is 12-14 days after fertilization , by blood pregnancy test & 3 weeks after fertilization by urine pregnancy test. - Your HCG levels suggest 2 weeks gestation. THey will confirm the result after second blood test- The Hcg level doubles in 48 hours in pregnancy. Thanks.