Will this make me pregnant?

My fiance and I been trying to conceive for the past year we have sex 3 times a day and I was told that right after we have sex lay in the bed for 15 minutes and I've been doing that could I be pregnant

Never heard of the 15 min thing - in my opinion, we don't have the determining input on that matter...wish you the best !!

Wow, you are only like 16-years-old.
Why are you in such a rush to grow up? You are way too young to be 'engaged' or trying to have a baby. You need to focus on your education and your career.

You might be having too much sex. Men become infertile if they have excessive sex. Here's what you need to do. Pay attention to your cycle and learn when you are ovulating. Let him save it up for a few days prior to that, and have sex on the day you calculate to be your ovulation day.

This will maximize your odds.

do you ever get really sharp pains in the sides of your waist, liek where your ovaries would be? well, im pretty sure that those are ovulation pains. have sex 2-3 days after that and it should help, or go to a gynocologist who specializes in infertility. you might have a broken ovary or something and you may need medication because thats a lot of sex not to get pregnant.