Infertility

So when I was 18 I was raped and got pregnant, I miscarried, 2 weeks later I got pregnant again and my ex hit me in the stomach and I miscarried, 4 weeks later I found out I was pregnant with my now 3 year old, 6 months later I had a drunken night with my boyfriend at the time and got pregnant with my 2 year old. now me and my fiancé have been trying for 8 months and we can’t seem to get pregnant. has anyone struggled with infertility after being hyper fertile. all within 3 years