What could this be?

I want to know if this is something I should be worried about, (like a possible Sti 😣) I won’t post a pic because it’s something near my vaginal area. I don’t know how to explain but it’s like kinda pus like, a little bump kind of and it hurts. I haven’t had sex for like 3 weeks almost and It’s only one person (my daughters dad). It doesn’t hurt/sting to pee but just a little when I wipe. I’ve been tested about the end of January for G&C and that came back -

Should I wait to see if it goes away or go to dr to have it checked? It started feeling this way about a week ago, and again I haven’t done anything in like 2-3 weeks. Any insight is appreciated

(I wasn’t sure where to post this so sorry if it isn’t the right group)