And yet another "side-effect"?

Good morning dear friends,

My hubby recently (about 3 weeks ago), had his last WBR treatment, and has been having 3-4 very loose bowel movements daily, since. He has lost about 10-12 lbs. and now tells me that he really doesn't have an appetite. ( He has always been a good eater). He had gained almost 40lbs. since his diagnosis in April 2010, so the weight loss didn't bother him. It is beginning to concern me. Told the Oncologist last week about this, but she didn't say much in this regard. He will be having his 2 month check-up CT scan this week. Because the cancer has appeared in some of his bones he will also begin getting Zomeda once a month and is now taking a Calcium (with vitamin D) supplement. Could that be causing the loose stools? Or is this yet another side-effect of the radiation? Of course, the fatigue, persists and that seems to be affecting him, mentally, as well as physically. Please share your experiences with this matter. Any ideas will be greatly appreciated. You all are my "go to" folks! Don't know what I would do without you all!

Continued blessings for all,

Lucy