Late period

So to start off on April 19-20 I got an positive ovulation test and then on April 24th I started feeling crampy and in my pelvic area as well.and lower back was achy and then around 2:30 am noticed a few spots of blood but that was it and didn't happen again. Then on April 25th I was crampy on and off and back ache. Then I was doing better and was suppose to get my period may 2nd I felt crampy but never got my period. So now I am currently on cycle day 10. I am at 22-23 dpo I have two different petiod apps on my phone and according to one I am 9 days late and the other says 7 days late. I took a pregnancy test 2 days ago it was negative it was a cheap pre mom cassete deal but still no sign of af. So far I have been so tired and peeing alot at night.but I have no clue whats going on with me or what 2 do. Ive never been this late. Is anyone else goimg through this ?