First natural period after pill (tmi) - TTC/ovluation help😩

Emma

Hey girls!

I came off the pill in Nov 17! Had first natural period end of March 18 (28th) it was a veryyy light one though didnt need a pad as only blood/brown when wiped.

Had sex on the 2nd April and my period came back but full force on the 3rd !! And stopped yesterday (7th).

When do u think I would ovulate ? Would cycle day 1 count from the 28th or the 3rd 🤔😩xxx