I had difficulty talking after radiation treatments. My job as a field engineer required a good voice for training and construction directions. I went to a speech pathologist who helped a bit. Primarily the damage was done and I just had to figure ways to work around it.
Over time my voice got better but never regained its original tone and force. Just another gift from cancer I suppose.
The real issue myself and many patients deal with is the idea that any malady that belays us for more than a few days is likely cancer and it is time to panic. Of course it is not cancer, rather a lingering common anything that anyone gets on a regular basis. I don’t think those thoughts will ever dissipate. Perhaps professional help may alleviate some post anxiety. On the other hand I always lived by the adage from Sir Winston that when you are going through hell, go quickly.