Lost In The Sauce

My Boyfriend And I are trying to get pregnant. My last period was in march, nothing in april or may and then less than a wk ago this month in june. My cycle doesnt last long, now as an adult; on average like 4 days. He has a daughter from a previous relationship whom we are rasing together but we still want our own. I have a thyroid condition my whole life, so irregular periods do occur. We used to have the attitude if it comes it comes if it doesnt it doesnt, but we have a 10 year age difference nd neither of us are getting younger. I have yet to loose hope but i fear fertaility doctors and clinics for the main reason they tell me i cannot carry. Any advice⁉️⁉️⁉️⁉️⁉️