Vaginal blister? Help

Hey so this is awkward but when I was showering earlier today I noticed a raised bump on my upper vaginal lip, kinda close to where pubes might start growing but still on sorta the inner lip. It wasn’t like too raised, it wasn’t zit like and the area didn’t seem to be discolored in any way. It didn’t look like any kind of wart or anything I’ve seen. I haven’t had sex in probably 5 months give or take. I’ve only had sex with two separate partners, both protected. I tried popping it and puss and blood came out (gross, I know. Sorry). The blister in question didn’t itch or anything, it was a little sore when touched though. What could this be? Should I be worried? Help would be super appreciated.