Period/ cyst bursting ?

Alex

My period was supposed to start 4 days ago and I’ve barely been spotting; normally I’ll spot for 1-2 days have 2 days of bleeding then be done. Well yesterday my pain level has been extreme like I never feel this way. I feel like I’m about to give birth to my uterus, I’m slightly starting to spot but could this be an ovarian cyst bursting ? I’ve been taking Tylenol and using the heating pad and nothing is even easing the pain up any.!