Help! Positive OPK 8DPO

Hello!

I am so confused and really need help. I received my first positive opk result on 11/1 and had a positive for the following 3 days, on the fourth day the test turned to negative so I figured okay I ovulated all done.

The last few days I’ve had very faint cramps again and I am so confused!!! Did I ovulate late? I just took another opk and it is very very positive. Any ideas? My period is due in 4 days...thanks!