Given the size they might give you four rounds of TC chemo if it hasn't gone to your lymph nodes, but as the folk above have said, you'll have to wait for the pathology results.
Normally they like you to move onto chemo within three weeks of your surgery. After that if they want you to have radiation therapy you'll get a short break as well.
The good news about it being ER+ is that you get extra insurance afterwards by taking either Tamoxifen or an Aromatase Inhibitor which either block or stop your estrogen, thereby starving any recurrence growth.
Hang in there. Once you get a treatment plan happening it gets easier. K xox