Please feed your baby the first milk you produce! It's packed with all the nutrients your newborn needs. In fact it has the highest concentration than the milk you will later produce. It's the "golden" milk.
Re on bfing while you are ill: as long as its not highly contagious and on meds that is safe for bfing, it's alright to continue. You are actually passing on the antibodies that you have to your baby via the breast milk. This was what my doctor told me.