My whole left side of my labia is red n swollen and itchy what could it be?

i havent had sex in over 5 months so it can't be an stdMy whole left side of my labia is red n swollen and itchy what could it be?
Might be some kind of infection or it could just be irritated. Try a cream like Vagisil for the itch and if it doesn't go away in a few days, see a doctor.
Probably an outer yeast infection. Try some yeast infection cream medication, as it absorbs in the skin faster and works longer.
Even though you haven't had sex in 5 months it still could be herpes
probably a yeast infection. you can buy otc yeast products with external cream that eases pain
This could be a number of things. It could be an abscess/infection that you developed; maybe from shaving or just blockage of a sebaceous gland. You may have a yeast infection. It might also be some allergic reaction to a tampon, pad, soap or underwear. If it is bothering you, go see your gynecologist.
MAYBE AN ABSCESS IF SO YOU WILL NEED ANTIBIOTICS, IF YOU LEAVE IT TOO LONG YOU MAY NEED TO GET IT LANCED.
COULD ALSO BE A SEBACEOUS CYST.
OR MAYBE A BOIL, TRY MASSAGING WITH TEA TREE OR WITCH HAZEL, WILL HELP TRY TO BRING THE INFECTION TO THE SURFACE (FOLLOW DIRECTIONS ON LABEL)