I'm hoping someone who has been through a similar situation can shed some light on this for me

I go see my obgyn for my annual visit next month. Next month marks 1 year that my husband and I have been trying to get pregnant since our loss last year. I went through a missed miscarriage and required a d&c. My cycles became irregular so my doctor put me on 50mg clomid for 4 rounds. That kinda regulated my cycles while I was on it but I'm afraid my cycles are going crazy again. Clomid did not help me get pregnant. So now there shouldn't be any reason why me a healthy 25 year old can't get pregnant. Has anyone been in a situation similar to mine? Do you think my obgyn can do some tests to find out what's wrong with me or do you think it would have to be in the hands of a fertility specialist? Because if that's the route, my husband and I cannot afford that and my Insurance doesn't cover. Can anyone shed some light on my situation? My husband and I have tried literally everything to try to get pregnant with our rainbow and nothing has helped us..