Crazy Temp Lines

Helen 🦕😄
I'm on cycle day 50 after stopping BC active pills on 5/1 and withdrawal bleed on 5/4. I began temping for the first time mid cycle. What's up with my temps? Is this spike ovulation? I don't have any opk's so I was going to pick up a couple today. Planning on BDing the next few days.  Thanks for any insight.