Please help me :( idk what to do?

my husband and I am trying to conceive baby # 2. My periods are irregular. period in march was on the 11, period in April was on the 7, period in may was on the 5. Had unprotected everyother day on may 8 10 12 15 17 19 20 22 24 26 29 June. 2. Took ovulation test every day starting on may 10 and was ovulating on may 20-21. i had one day that i was ovulating, but notcied today i am getting my period. i can't seem to get pregnant. i already have a 3yr old son. and 9 months ago i went to the hospital with lots of pain and they said i had an ovarian cyst on my left ovary, so that means i cant have no more kids. what should i do? i am gonna try again when period is over but please help.