Ovulation??

Laura

I know it’s not possible to ovulate twice, but when did it actually happen? As you can see I got a positive OPK on CD12 (digital), but I thought it was early for my cycle so kept testing. Got 2 more positive OPKs on CD16 & 17, but I used a strip tests instead of digital. Also had heavy cramping on one side during CD12 (All OPKs are using strip tests except for CD12) What could be happening!?