Cramps! Help!

Brittnee • Mama to two boxer pups, three angel babies, and my perfect rainbow baby boy born 8-4-21🌈💙

I’m on CD20 and 3dpo and have had cramps off and on for 4 days now.. normally i have cramps the day before and day of ovulation every cycle like clockwork.. but now I’m having lower stomach pains and lower back pain. I notice the stomach cramps come on suddenly when i have the urge to pee. The back pains are growing more frequent and not sure if i should go to the doctor ASAP or wait and see if it stops.. anyone experience anything like this before?