Blood after using vibrator! Help!?

So this morning I used a vibrator and found blood after using it. It's now 8 at night and I'm still finding that I am bleeding, what on earth could possibly be causing this? Im not experiencing any pain but I'm slightly freaking out.

Edit: I should have noted I haven't had a period in three months and am definitely not pregnant. I am due to see a doctor tomorrow because I am worried I have PCOS.