We don't usually see new hair as the growth is cyclical. A few are shed daily as the new ones push from the follicle - a bit like baby teeth being pushed out by adult ones. Brushing too hard can damage hair follicles which won't mend, using a baby brush or a comb is far better than a brush, less harsh on the scalp and less likely to pull hair.
A gentle shampoo should suffice. Many conditions strip hair of natural oils which isn't good. Shampoo, rinse, brisk *gentle* rub with a towel and air dry.
My mood was tamping yesterday

Sammiejane - maybe ask the hormone question as a new thread so that your query doesn't get lost?