Strange cramping??

Courtney

All day today I have been cramping, at first is wasn't that bad but now it feels like full blown period cramps. I stopped my period 5 days ago so I know it's not my period coming up. However according to this app (which I know isn't always accurate) I'm entering my fertile window, so could it be ovulation cramps? I'd like to note that I did have sex on the 23 but I'm sure this couldn't be related to a possible pregnancy