What Causes Bump On Vagina While Having Yeast Infection?

hi im 5 months pregnant i went to e.r. last week got a cateter in me and a swab test, i had a yeast infection and bladder infection, im taking antibotics now, my question is now i have a bump on my leftside of my vagina its the color of my skin, it got bigger since yesturday hurts, i put a hot rag on it and i been tested and everything wat sould it be