Hi Kym,
i had much the same side effects that you mention - rapid weight gain, mostly fluid, chest tightness, shortness of breath & aches in muscles and joints. Last chemo was 6 weeks ago and symptoms slowly starting to improve. Had every test under the sun but no answers. When you google after effects of chemo these all come up as being quite common, don't know why my oncologist didn't know that. Hang in there, I've had to really restrict what I do each day, but find that taking it slowly I am getting stronger. Sit back, enjoy Christmas, and let others do the work this year. You will feel better as time goes by if you just rest up and take care of yourself. Best of luck, Tracey xXx