I need help!! And advice and answer to my questions

Ana • 2e been married for 4 years, ttc for 18 months for baby #1 💕💍💑🍼🍼
I had the mirena for 3 years and never got my period i have always been irregular then i got it removed surgically because it got embedded on my uterus, after the surgery i was on the patch i started using the patch on February and got my period every month. I stopped using the patch in September i had my period on sep 23-28 and since then i havent had my period we had intercouse without protection all October and around my fertile days af was supposed to come oct 24 it still hasn't showed ive taken pregnancy tests and they all come back negative ive taken ovulation tests and they are negative too, has anyone gotten pregnant while been so irregular? I really want to have a baby