Is something wrong with me?

I had a miscarriage in my last relationship about 2 yrs and 5 months ago and the doctor didn’t want to do a curettage. After that I never took contraceptive pills. In this period of time a lot of things happened to me, I moved to US and I met my actual boyfriend. We live together and we are not using any protection for the last 6 months. We have a very nice sex life but I can’t get pregnant. Any possibilities that something is wrong with me after that miscarriage?