What's going on??

Nikki
So this may be a hard question to answer since in so irregular. I can easily go 2-3 months without a visit from AF.  According to the app I was suppose to have AF the 17th of May but nothing. I took 6 test between that week and the week that followed it and all BFN
This week I have been experiencing random spotting. Maybe one or twice a day I'll wipe and see a little bit of blood but it stops. Today there hasn't been anything so far. I thought it was AF finally but I've never experienced anything like this. According to the glow I am suppose to start ovulating today. Could that be my issue? Ovulation bleeding? I've never experienced it before. Can you ovulate or have implantational bleeding if you haven't had a period in months??