Erratic temps....what’s happening?

So I usually ovulate between days 13-17, I usually have a very constant graph...steady temps before ovulation, a clear dip and spike and elevated temp until af! Well, thins month my temps are all over the place, no spike when I had cramping and fertile cm (I was convinced I was ovulating) I was worried maybe I didn’t ovulate and was having an a ovulatory cycle... then it appears I ovulated 3 days ago????? Cause now my temps are steady and high but I didn’t have any ovulation symptoms??? Anyone with some opinions as to what’s happening to my cycle??