GIRLS ONLY: Has this ever happend to you?

It's possible you accidently nicked yourself with the vibrator.

Another possiblity is that you have vaginal dryness which will cause bleeding like you describe. Only a gynecologist can diagnose vaginal dryness and he will give you a prescription for a cream to use twice a week. It isn't a lack of lube, the skin is over-dry and delicate. It's a common problem.

If there was no pain, you may have just stimulated your cervix and caused some menstrual blood to come out. Sex has started my period like twice, just from the force of the penis against the cervix and vaginal walls and increased lubrication.

If you were being rough then could be a little tear in the vagina wall and nothing serious.

No it hasn't happened to me before, it could just be your period or just some leftover blood from your last period.

if i had a $1.00 ever time thats happend to me id still be poor

It's never happened to me, but your "cherry" popped.......