My surgeon said I was estrogen and progesterone. Her2 pos. Tumour was 1.7 cms. and clean margins. He used nos. for the sentinel node (2.3). He said he doesn't worry if it is (2)? At my first appointment with oncologist, she said 1 lymph node was removed. My treatment started last week (4 cycles, with herceptin, then radiation and more herceptin thereafter. First herceptin was 90 mins. and the second will be 30 mins. Is this a much smaller dose? I have had side effects like sore muscles, some nausea, and feeling cold. Has anyone had a similar experience?