Depo shot

I became pregnant at the early age of 15 with my son. I had him when I was 16 and my mother put me on the depo shot thereafter. My son is now 13 and I want to have at least 2 more kids but haven’t been successful. I was on the shot until I made 18 or 19 (not too sure when 🤷🏾‍♀️) . But I bled for 3 months straight and I was told that was normal after getting off the shot. My doctor had put me in a fertility drug when I tried to get pregnant 🤰🏾 when I got married and still no success. I even went to the doctor to make sure I was still able to have kids and I can. I was advised to get my husband,at the time, to check his sperm count. Now I am ready to have more kids before I get too old 😂 . Any advice?????