My mom had knee surgery 4 weeks ago. She has been home from 2 weeks of rehab for 8 days. Her appetite is decreasing, she feels full after a few bites, and then begins to belch a lot for hours after. In addition, she is extremely weak, very sore from PT and home exercises, and says she just doesn't feel well. She wants to lay in bed and I have to really enforce she get up and move, eat and drink. She's 74, diabetic, overweight, and in general poor shape. Her BP and sugar were out of wack in rehab and they gave her too many conflicting meds which her Internist has reconfigured. That seemed to help with her nausea and diarrhea she experienced last week. Her BP is lower than usual for her and her pulse was 55 today. She's a retired RN, but isn't a very compliant patient when it comes to following her own instructions she issues when I am sick. I'm worried about her lack of appetite and extreme weakness.