Detected blood sugar, cyst on pancreas, blockage from intestine to liver. Does switching medicine cause exhaustion?

Exhaustion. For the past month I have bee in the hospital and a rehab center with no breaks. Started wiith a blood sugar of 10 followed by a CAT scan which showed a cyst on my pancrease followed by another test that showed a blockage from my intestines to my liver . Every time they come up with something new and every time there is a switch in medications . Can this constant change in medications cause this exhaustion. The next appointment is March 7th with a GI. Any idea of what to do until then? I am a 56 female. Any ideas would be greatly appreciated. I am kind of at my wits end and feel like I am losing my mind!!!