Is sharp pelvic pains similar to period pains normal or worrying in early pregnancy?

I've taken about ten home pregnancy tests and they all have come back positive I even thought it was a fault in the test so I ran on test under water from the tap and it came back negative and all the ones with my pee came back positive, I have had any symptoms but today I've noticed occasional pelvic pain like period pain it just randomly starts and hurts quite a bit and stops it's been like that for a few weeks, I've got heavy sore boobs
Could this pain I'm experiencing be a miscarriage?