is this staph in my armpit?

So this is so freaking painful that it hurts to move my arm. I can't tell if it's just an ingrown hair or a boil or even worse staph but it FREAKING HURTS like all the way into the side of my breast. I poked it with a steril needle and NOTHING came out and I squeezed it hard. Fml edit: I talked to a doctor and she just said it's an infected hair follicle and to keep it covered with neosporin and not use deodorant.