This one is for the ladies, so men you might not want to enter.....lol

If its under your arm it may be a clogged sweat gland, but it could also be a cyst/problem with your lymph node. If it is your lymph node - that could screw up your hormones most definitely and even if its benign, you need to be checked and possibly have fluid drawn and labs done or a scan.

Now that is odd that you mention a lymph node. Back last year around the time I stopped having periods and the time when the thing under my arm came up, I had a swollen lymph node in my neck under my jaw. I went insane, because I had never had this happen to me before. Come to find out it was swollen due to infection. I had a salava gland that was infected because I was trying to pass a calcium stone? I dunno, that is what the e.r. said. Never heard of this before. But there was this little piece of white thing sticking out of the inside of my cheek. I posted on here asking if anyone knew what this was, and a few people told me a jaw bone splinter. But it was just calcium trying to come out of my body. But let me tell you I think that all of these things were related. First my lymph node swelled, then I noticed the thing inside of my cheek coming out, then the thing under my arm swelled, then no periods, in the middle of all of this I caught pneumonia for 3 weeks, I also had bad chest pains, the doctor told me this was from smoking though. it was aweful. That is when my anxiety kicked in really bad. But in my head I thought all these things were connected and that they were all symptoms of a crazy disease that I had caught. Lol. I know call me crazy. So, there that is the whole story of the past year........Do you think this is connected in someway?

everything in the body is connected. you have your major lymph nodes in your neck, under your arm pits, the groin, behind the sternum, below the rib cage, and i think something else in the thighs. Not always but I have read that many times rock hard nodes usually means cancer, soft means infection,firm but rubbery could be lymphoma. It is normal however for them to be swollen when you are fighting an infection regardless. So it could be a sign you are still fighting something in your body.

Oh my gosh, they can really burst. Oh man. I have though of that, but I just thought I was crazy. Wow, that scares me, yeah I am gonna go soom to the doctor. Just been busy and been putting it off for a long time now. Thank you for telling me that, it motivates me even more.