This patient support community is for discussions relating to breast cancer, biopsy, genetics, chemotherapy, hormone therapy, lumps, lumpectomy, lymph node dissection, lymphedema, mammograms, mastectomy, radiation therapy, reconstruction, self exams, and stage 3 and 4 treatments.
I'm sorry to hear that you are enduring all of these things but strongly admire you for putting up a really good fight with this disease. The symptoms that you are experiencing are really the side effects of chemotherapy. It is true that these drugs does not only kill cancer cells but also affect our normal cells as well (blood cells, gastrointestinal cells, etc.) and we just hope that the normal cells recover before the next cycle of chemotherapy (also with the hope that the cancer cells do not recover that quickly). That's why you feel weak in between cycles.
I pray that you hang in there and tolerate all of these treatments. The good news is that new drugs are being churned out as I post this and tested for breast cancer so that we will never run out of options.
Be strong. Regards and God bless.