My period was 3 days late. prior to that i had heartburn, nausea, & hot flashes. i had a tubal ligation 11 yrs ago. thought i was pg but tests were -. now im having brown spotting followed by bright red heavy bleeding & labor pain like cramps. please advi

Probably menses: If your pregnancy tests have been negative, then delayed ovulation can result in delayed menstruation. If pregnancy is uncertain, then a blood test for pregnancy will provide a more definitive answer. In theory it could be an early miscarriage, but a positive pregnancy test is needed to confirm this. Otherwise it may just be a bad period. If you do have a positive pregnancy, se.