Miscarriage

have anyone experience a miscarriage b4.. I had a miscarriage with my son when I was 18wks back in march they didn't tell me what cause the miscarriage and I still don't know til this day.. I was hurt but I didn't break down right then and there I had get along with my feelings it hunted but now me n my fiance are trying for another baby and it's hard ttc again.. I think I gave my body enough time to heal but is there like a time period to try and get prego again after a miscarriage?