Surprise

I hate that getting off the pill. I tried the pill for one month I felt soooo shitty that I said I am not going to do this anymore. I got my period 2 days after stopping, full 7 days period. I decided to do opk tests as soon as period ended to figure out when I ovulated so I could guess about when next period would be. Well I stopped testing at cycle day 25 with no peak at all ( not pregnant I checked ). So I guess my period will be a surprise. Anyone else have this happen.