i just noticed last night that i have a large pimple-like bump below my right nipple, near the border of the areola. it appears to be one of the montgomery glands surrounding the nipple that got infected somehow. if i squeeze it, it feels about the size of a pea. i tried to pop it last night, because it had a white head, and pus came out, but now it has become very tender, with a red spot where i popped it, and the area of my breast in a 2-inch diameter around the bump is now a little red and swollen. i noticed it was getting red earlier today, and it got worse after swimming this afternoon, in a small backyard-pool with a small amount of chlorine. if it's any help, i got married two months ago and have only since then become sexually active, and i am 20 years old, if that is useful at all. should i be worried?