Depo shot

baby girl
I had my first son at 15 and then I got on depo shot about 2 and 1/2 years and then I been off about 3 years and my periods are irrealugar the are every 44,37,35, days apart and me and my son been ttc about 1 year and we bd every day and still haven't been able too what can I do please help thank u..