infection and side effects

At my last regular appointment, I told Dr. Esplin about the redness in my left upper breast. He checked it out and didn't seem concerned. I also told him about the pain that moved from my upper arm to the middle to then my hand. He had no answers. (This happened once before when I was on Ibrance)
A week or so later, I noticed my hand was swollen and really hurt. My chest was not only red, but hot.  I got scared, called  and he prescribed some antibiotics. Took those and it just got worse.  Called when they were gone and they had me come in right away.
He had me get an emergency ultrasound to check for an abscess in my breast and a blood clot in my arm.  Both came back with no sign of either. So he prescribed stronger antibiotics. 
It seemed to help the pain a bit in my breast and a lot of the swelling in my hand went down, but by the end of the antibiotics, I didn't feel like it was taken care of.  Went back in and Dr.Esplin thought it looked better so we're just waiting.  I don't like when they can't tell me what is actually going on. 
He's a little nervous about my breast. He's worried it's the inflammatory part raging on. We'll keep an eye on it, but I may have to do the hard chemo. 

So we wait.  My appointment is next week and I'm anxious to see if my tumor markers are coming down.

My back has also been giving me problems the past month. I had one day when it hurt to stand and it hurt to sit.  It scares me what is happening in my spine and ribs.

I'm going to list all my side effects as a way to help me remember. Sometimes on my MBC groups, others ladies have questions and it's hard for me to remember details.

I'm not sure which drugs are causing which side effects, so yeah....

Extreme cotton mouth. Always have a a nasty taste in my mouth
Food doesn't taste right.
swelling and pain in left arm that moves down into hand
bathroom issues
fatigue
dry nose and throat
pain in back, sides, neck
BRAIN FOG!  I hate it so much!

I'm on one drug that's supposed to make me gain weight and one that CAN make you lose weight. Of course, with me, losing isn't happening.  For now, I'm at least staying the same.