Hope you are doing well. I am on the same medication. The same thing happened to me. I was in total shock 😲 I was told I would not loose my hair. I had my hair stylish cut it short. If you shave it your scapl will be more tender.
Best of luck. Stay Strong 💪
Ps I found so many cute hats on Amazon. Google chemo hats for women. Sending lots of prayers.