Depressed!!!! ;(

Idk what to do I keep thinking I can't have kids. I was on BC for about 6 years and then I was off it and then I took the pill and stopped taking it in July this year. I have been sexually active for the longest time and me and my fiance don't use protection but I'm not having any luck. I keep having the symptoms but I'm not pregnant. I was also molested as a child until I was 15 and I am now 22 and my mom thinks that might have something to do with it please I just want to be able to have a family of my own and I'm scared plz pray for me and give me hope.