Early pregnancy cramps?

Alicia
I'm 12dpo with three positive tests
And a clear spike in progesterone/bbt For the last three days I've had period cramps on and off. They aren't Implantation cramps because my first test was 3 days ago which means implantation already occurred. It feels exactly like what it feels like an hour before I get my period. Every time I've sat down to pee the last three days I thought I would see blood because of how I felt but, alas, Nothing. Truly hoping everything goes well but these cramps are making me doubt this hung will stick and preventing me from Being truly excited and believing it's real. Anyone else experience this feeling? Due to get my period tomorrow or Wednesday.