Strange period or mc

My normal period is 1st day spotting then 3 days med/heavy but this time I'm 2/3 days late woke up with cramp which a couple hours later were extremely painful to the point I was sick light bleeding(red), managed to fall asleep for about an hour sat up on sofa woke up no pain but pinkish blood now I'm still bleeding normal but no pain help a confuses woman out please