Long Positive (?) OPK's?

McKenna

This was the difference in 5 hours. The top is the first one I took 5 hours ago. Bottom I took 10 mins ago. It's nearly positive, nearly, but not completely. Is it normal for it to be unchanged for 5+ hours? I'm going on cd 17 tomorrow, the past 6+ months I've been ovulating between cd12-14! Is this normal?? I haven't ovulated so late in a very long time, almost a year.

My period was also early last month, but not painful, and it lasted longer than usual. Maybe that's the reason for late ovulation??

Thanks in advance!!!