Should I be worried??

I'm 19 and have been trying ttc #1. I miscarried my first baby when I was 14. I began having irregular periods. I stopped taking the BC last year. I miscarried baby #2 last summer when I was 18. My periods are fine now just really really heavy and short. Is it hard for my body to keep the baby and to conceive because of all of this?? I'm just worried because I want to give my husband a baby soon.