First chemo session

Hi everyone ,I'm 41 yrs old and  I have been told this week that I have to start chemo in about 3 weeks, can't remember the names but I'm having 2 together, I had thyroid cancer which thankfully has all been taken out but it has gone to my lungs, I don't no what to do with my hair, I have read about the frozen cap but don't like the sound of it, I don't no if I should shave my head to a number 2 and do this for charity towards thryoid cancer and also it will help me get used to it or do I just wait and see ? Only thing is I am scared to find fallen hair on my pillow etc, I am having 6 cycles of chemo, thank you for reading