Herpes? Or harmless cyst?

I noticed this odd bump on my labia near my vaginal opening the other day. I had unprotected sex in October, but have had no issues since then up until now and tested negative on my STD tests following that encounter (I didn’t test HPV, however). It isn’t painful and has remained the same for the last couple of days. I read about Bartholin’s Cysts that can arise from rough penetration, so I thought it could possibly be that, but could it also be a very mild Herpes Outbreak? I have OHSV-1 and have had it since I was young and I believe you can’t get it genitally if you have it orally (i think?), so if it is herpes it could only be GHSV-2. I don’t feel like it looks like any photos of herpes sores that I’ve seen, so I’m kind of at a loss. .

bump