Conversation: The conversation between human and AI assistant.
[|Human|] Hi, my boyfriend and I have been having sex for about 13 months now, and I still havent fallen pregnant. We are both 20 and beginning to worry. We havent had intercourse with anyone else, and he thinks hes shooting blanks. How long does it usually take for a healthy couple to get pregnant?
[|AI|]  Hi, welcome to Chat Doctor. There is no thumb rule for getting pregnant. Sometimes prolonged intercourse is necessary, while in other cases even a single intercourse may result in pregnancy as in rape. The timing of intercourse is important in this respect, 7 days prior to and immediately after periods is considered Safe period, that means intercourse during those days does Not result in pregnancy. However, many other factors affect conception: whether there is ovulation, whether tubes are patent, whether the male ejaculate has the sufficient number of motile sperms, etc. You need to be investigated for these parameters, do see a gynecologist. Further, I'd like to remind that you are in your twenties, hence you have time on your side. Do not worry unnecessarily. Hope this information is useful.