May or June baby!

Of course I made my very first post to glow ranting about how everyone asks when you are going to have a baby and it's taken a while for depo to wear off (a year and a half and irregular cycles)... I finally got my first very positive OPK. I had sensitive breasts, which I had with other cycles thinking I was ovulating. A few days later when the tender breasts didnt go away I took another OPK... positive! I remembered that they may pick up pregnancy. So I took a pregnancy test September 23rd and got a rather dark line. Woohoo!! 😁🤰 my husband and I are ecstatic, but I have no real idea of when my due date is. August 22nd-25th I had very light streaks of blood in my CM. Then the 26th-29th had actual spotting, so I assumed this was my period and didnt take a pregnancy test then. Looking back I'm thinking this had to be implantation? It was september 5th my breasts started hurting. Anyone have any insite on when they might think my due date would be??