Are my eyes playing tricks on me?

Whitney • Proud mom of 3 year old baby girl and baby boy due in December.
Started opk, fertilaid, and robutussin(for mucus) on cd 8. Got slight cramping on cd 15. Took one test at 11 am and one at 9 pm this is the darkest 2 lines I've seen. Cd16 is today and the line is not dark anymore. Glow says I'm ovulating starting Sunday but that it's especially important to bd on the 19th which will be tomorrow cd 17. Hubby is not that interested this month .