Conversation: The conversation between human and AI assistant.
[|Human|] My girlfriend is still a very few days away from her period, supposely between the 20th or 21st of this month. We had unprotected sex on friday, i tried not to ejaculate inside of her, and 99% sure i didnt do so. Today, she took a pregnancy blood test and the result is positive. I read all the time, and have read that there may be a chance of a false positive result. Could she really be pregnant?
[|AI|]  Hello, I have gone through the query and understood your concern. Blood test for pregnancy can read positive as early as one week after ovulation if conception occurs. If she was ovulating at the time of the intercourse, conception chances are high and if the test is done at least a week away, the result would be mostly positive. The blood test moreover, is very sensitive and specific and chances of error are very less. You can further confirm with a trans-vaginal sonogram done a few days after the expected period. Please remember that ejaculation is not necessary to cause conception; the pre-ejaculate is enough. Hope you find this information useful. Take care.