Stopping BC and OPK's.

Jen
How long did it take for you to get a positive opk after stopping birth control? This is my first month off of it TTC. When I was on the pill my periods were always regular and I got it every month. On CD 13 now and still have very faint opk lines. Due to ovulate in 2 days according to Glow. Im just getting frustrated and worried :/