okay

so my bf and i are extremely faithful as well as always using protection...so other partners are out of the question

we last had intercourse 1 week ago.

now. today i masterbated this morning and again in the afternoon (horrible i know)now the left lip of my vaginal opening is sore, and itchy and burns a little when peeing, it had not done so earlier when peeing.

there is no abnormal discharge and the itching is not that intense, im more worried about the swelling and redness.

WHAT IS THIS?!?!?!?!