Period returning after stopping the pill

I'm 27 and have been on the pill for over 10 years for other reasons besides contraception. I came off the pill in May of this year as my husband and I want to start trying for a baby. I've had 1 period since coming off the pill and it has been really frustrating is this makes it hard to track when I'm ovulating etc. Has anyone been in the same situation and how long did it take for your period to return to normal?

Thanks!