Need help!!

I’ve been off birth control since October. Haven’t had a period yet but all this week I’ve been having period type pains, feeling extremely nauseous, belly is bloated and headaches. I took a test this morning and I thought I could see a vvvvfl but when posted on here most people said bfn! Do I wait a few days and re test? Can I just go to the doctors and ask for a blood test. Or Could this just be my body trying to sort itself out?! I’m just so done with feeling ill without there being a reason for it 😩