Pain while masturbatin?

Amethyst

Ive been masturbating for a while but for the last few days Ive been really sore while doing it..

Im 16 and a virgin but I masturbate every other day and I use a toy but its been starting to hurt. Im usually extremely arroused and lubricated but its still sore during and after.

Its been getting worse its like a stabbing pain and idk what to do.