So nervous here,

I have a angry red bump, just one.  Its just outside my labia and almost at the fold where thigh and groin meet.  I don't notice a little black hair, but I did shave recently.  I often get razor burn but when its up high i dont worry.  This one is red, as I said.  Maybe half the size of a penny.  It was sensitive if i tried to squeeze it, but I recently popped it and it feels fine.  I guess the discharge was more like pulling out a tiny piece of pus because it was thicker and didn't run.  I think it may have had a tinge of yellow to it.  I have had sex with three people in my life, my current sexual partner is committed.  The other two informed me they were clean (but people can lie i guess).  I'm just so nervous, I'm sure its just an infected ingrown hair.  But what if its herpes...