Ovulation test HELP!

I took a test on Friday and it came back as low. Took a test Saturday and Sunday and both were blinking smiley faces (high). Then this morning I took another and it showed the blank circle which is low. I’ve also been tracking my bbt and I had a spike in temp this morning. Could I have ovulated last night? My tracker said I was due to ovulate tomorrow but with this new info it’s saying I might be ovulating on Friday. Has anyone else had this happen? I feel like I may have just ovulated early and the surge maybe happened last night.

I also was having ovulation pains last week so I’m pretty sure that I had to have ovulated. Thanks for your insight!!!