Stressed

My husband was diagnosed with non Hodgkin’s lymphoma 8 weeks ago it’s a treatable type of blood cancer. His third lot of chemo is 23rd augast I’m so confused has to why it’s affected his memory and mobility he went into hospital 8 weeks ago being a normal person now he has to wear adult nappys because in hospital they put them on men it saves them haven to see to them in the night why now is he wetting the bed and still wanting to wear them we are at a loss why his mobility is so bad his memory to does chemo affect memory I’m so stressed he’s 72 I’m 75 and not coping it’s like he walked out of his body 8 weeks ago and is a completely different person .