Itchy vagina and bump?

Okay well, my boyfriend and I were having sex a few weeks ago and I was getting fingered (not meaning to be graphic or anything) but the first time, he kind of missed the right hole, if you know what I mean, went back a bit to far into my hind quarters, then went back into my vaginal area. The day after, I got my period and it was fine for the time being, but right after my period, I got a urinary tract infection. So I went to the doctor and took pills for it, and that seems to be gone now.. but a few days after the urinary tract infection went away, My vagina area started itching really bad. It still itches, it only really started itching within the last week or so.. but I'm just kind of worrying what it could be? I got some Vagisil to help stop the itch, but when I was putting it on, I noticed a bump down around where the main itching is coming from.. any idea what this could be? I know the urinary tract infection probably came from us having sex and being fingered the wrong way, and but why the itching and the bump?