Well, I am 17, and just found out I am pregnant. It took me less than a month to conceive. Try to have sex 14 days into your cycle. So if you were like me, my period lasts 30 days. I expected my period on May 24th. I had sex on the 9th of May. That is 15 days into my cycle. but close enough. Try to have sex 2 days before and after this. If you post again, or message me, let me know the day of your last period, and I can try to help you plan it out. Also there are little things like lying on your back ten minutes after sex with legs in the air, and little things like that to help you conceive. Please message me your last period date! I would love to help!!!