last year,i was treated for chlamydia.. soon after,i found a pea sized bump on the bottom of my labia majora.i ignored it & it eventually went away.but a few days ago,another pea sized single red bump came back in the same spot.it looked like a spider bite/pimple so i popped it.it has scabbed over & is only painful when i touch it now,but it still itches.. what could this be ? please help me.