About one month ago, I was sexually assaulted. It is hard to admit, but it is true. After the fact, I had some hemorrhaging from my behind despite it only being vaginal penetration. This person was not using any protection. After this occurred, I ran away, but I had contacted him later asking if he had any STIs. This was someone I thought I could trust. He claimed that he did not and that he was just tested two weeks prior. About one month later, today, I felt something while inserting my tampon on what I thought was my labia minora.
However, it was on the lower left of my vaginal opening. It felt like a water blister, very tender. It is singular, painless, and does not itch. It is about the size of a pencil eraser overall. It is pink, which is the same color as my labia minora and vagina. It is slightly visible, but not very much at all. I recognized this area to be where the Bartholin's gland is located, almost without a doubt, since I am very familiar with anatomy since I study the health sciences. Perhaps it is a cyst rather than a genital wart or herpes? I believe that most "lump and bump" STIs occur in multiples. These types of cysts are comorbid with other infections, sexual or not, but I have not had any other symptoms in this past month.
I have to wait until Wednesday before I seek medical help because of finals and dealing with my grandparents' illnesses. But I can't sleep thinking about this, and I would appreciate opinions. I know I should have gotten tested earlier, but after what had happened, I did not feel comfortable talking about this situation and being probed.