4 Positive OPKs??

Madeline • Mom to Landry, wife to Brad and fur mom to Griffin and Baylor!

So I've gotten 4 Positive OPKs and I am thoroughly confused! I got my first positive CD 11 then a negative the next day. Then CD 13 and 14 I got positives again so I decided to stop testing and figured I was ovulating so why waste more tests. Today (CD17) I had this weird feeling just to take another ovulation test so I did and it was positive again!! Can anyone give me some idea of why this is happening or when I actually am ovulating?!