Wobbly nearing the end of active treatment

Hi, I am new to this site and not sure if this is the correct place to post. I was diagnosed with her2+ just over 12 months ago and finished my chemo just before Christmas, at the moment I am being treated 3 weekly with Herceptin and Leterazole (taken orally daily). I was quite sick with the first four rounds of chemo before I started on taxol, I tolerated this ok but in the last few days I have noticed I'm unreasonably emotional and have pain in my right arm and hand, I have had some amount of pain in other areas but not as severe as this. At this stage my last Herceptin will be in October. Has anyone else experienced this?