Ovulation cramping/pos. opk, no temp rise?

Amanda
Hi there,
This is only my second month temping. On Monday I got my first positive OPK (the line was a lot darker than the control line) and a few hours later had the cramping on one side for a few hours off and on. What's odd is that my bbt is hasn't spiked at all yesterday or today. Is it possible I haven't ovulated yet after all that? Today is the last day of my fertile window, according to Glow, and Monday was my highest chance day. I suppose maybe I didn't have the thermometer as far in my mouth today, given that I was half asleep. Any advice would be great, thanks!