Opk confusion

Lilly

Hii!! So I have irregular periods sometimes (most of the time) its35 + days a few times it’s been 28 days , this cycle has been different , I got a positive OPK yesterday I tested twice and both times positive , this morning it’s negative OPK , not sure if test are defective or my cycle is moving along quicker then usual? Maybe it was a fake positive? Should I keep testing ? Here’s pics of my current OPK and my past cycle opks

This mornings opk