That doesn't sound out of the ball-park @"k@th3r1n3" I had my second surgery on 8 January, and was scheduled to start chemo on 5 Feb but due to circumstances at the time, actually had my first on 8 Feb. Mine was after a mastectomy and axillary clearance, grade 2 ILS OR & PP+, HER-. Even though it was much larger than expected and had gone to the nodes, my surgeon is fairly confident that the cancer has been removed. Chemo and rads are for insurance. I healed very quickly so that was one of the determiners for being able to go ahead with chemo at that time.
But question your doctor about the decision re: dates.