I never had cancer but when I was 25 I was on Cytoxan treatments and that caused my hair to start falling out in clumps. At the time, I had just purchased my first house in a new state and I didn't really know my new coworkers very well. I was embarrassed by my hair loss and didn't know what to do about it. I tried going to wig shops but they wanted $25 for each wig I tried on and I just couldn't afford it. I'm not much of a girly girl and I just didn't know what to do. (I have naturally very straight, baby fine hair and the thought of all that fake hair seemed unnatural to me and very obvious.) I cried about it for days. I called out of work and didn't go anywhere.
Thankfully my mom stepped in to help out and paid almost $800 for a real, human hair wig that was color matched to my remaining hair. At the time, I thought it was a perfect match but looking back at old photos the wig was made with red hair. (Mine is light brown.) Apparently all that was left were the red highlights that I had. Go figure.
My experience with having to shave my head and wear a wig was very stressful on me. I was always worried that it would move or someone would tug on it or that it would fall off while hanging out with friends at the amusement parks. (Disney, etc.) I also had to constantly shave my sideburns and a little patch on my forehead so I could adhere the wig with the double sided tape that was provided which was also a bit counterintuitive. It was a very tough choice to decide the point at which I would reveal my own hair as it started to grow back because that meant I had to stop shaving those spots. (And go without the security of the tape.)
I had heard all the stories about hair texture changing when it grew back and I was hoping for thicker or even curly hair. I had never had enough hair to even do a french braid as a child and that was the only exciting thing to look forward to. Unfortunately I ended up getting my same old hair back exactly as it had been before the Cytoxan.
I know I kind of rambled on there for a minute but I wanted to say that if I ever had to shave my head again I wouldn't wear a wig. It was much more stressful having to worry about everything that could go wrong with it along with the care of it that it just wasn't worth it in the long run.
My suggestion to you would be to shave your head and embrace it. Don't let your hair define who you are. It will grow back and you'll be a stronger, more confident person in the end. I wish someone had told me this all those years ago so I'm passing my experience on to you.
Good luck and I hope you're able to beat this. Cancer is an awful disease.