Hi Charles, First, welcome to our group hope you find plenty of information and maybe make some freinds on the wey.

Aside from the above mentioned low blood count, hypothyroidism which are both major causes of fatigue and need to be checked, in general you are going to feel tired as a general side effect of the radiation. We use a general rule of thumb around here, one month of post radiation healing for each week of radiation. What you are feeling is quite normal and to be expected.

Need to eat as much high protein stuff as you can, and get penty of rest. At this point your body is healing from the radiation, and the fatigue is to be expected.

If you go back to some of the earlier posts, you'll see a variety of post treatment things that we've all had to deal with to a varying degree, so a lot of what you are feeling and going to feel is normal. You won't have all of the side effects, but maybe it will help guide you through which ones are normal an which ones are not.

Take care
Bob