heavy early period after masturbation

Last night after masturbating (and having a strong orgasm) I noticed a bit of blood  Just a little. I thought that maybe I scratched myself or tore my hymen a bit more than before. So I go to sleep and wake up and I have a very heavy period (it is 1 week early) Also the flow is unsusally heavy for me. Looking to see if anyone has had this or any advice. If it continues very heavy and doesn't show signs of tapering off I will contact a doctor but I want to give it a chance to regulate.  TIA!