You're all going to get sick of me and my OPK questions :P

Samantha • TTC #2 since Feb 14.
SO!!
​I took my first opk on sat with FMU after a 3 month break and it was positive (I think) - the first possible positive I've ever seen! 
​Sat was approx CD12 but I' haven't had a period in approx 1.5yrs as I was on the depo. Last shot was Nov (8 months ago) and I THINK in only hair starting to get back to normal FINALLY as been TTC since feb!
​Anyways!! I thought as my possible Pos was on Saturday (after BD'ing the night before) it was only because it was my FMU... But I've kept up the opk's and they seem to be getting fainter!!
​Do we think I ovulated and finally have a shot at conceiving this month???