TTC after miscarriage


I am 24 years old, my partner 30. We were trying for a baby for around 18 months before we got pregnant, it did slightly worry me however I used to be on the contraceptive injection and was on it for a long time so figured it could just be that. Anyway in June 2017 we miscarried at 10+2 weeks. My periods are back but I just feel anxious that it took so long last time? Would people suggest going to my doctors? The hospital told me after miscarriage my thyroid hormones could be low and I also had some erosion on my cervix but this could be due to pregnancy! Please help x