Help! Another positive opk!! πŸ˜–

Laura
Any ideas ladies!? πŸ’‘ 
I had positive opk on cycle day 15, which is normal for me. But the last 2 days (cycle day 20 and 21) I've had more positives. The lines are all the same, as dark as or darker than control. Took a hcg just to check and got what seems to be a a faint line on one. Did 2 more today which don't show antlything!! Confused πŸ˜• 
Top pic hcg test
Bottom pic today's positive opk