Recovering from ECT can take many months. Be kind to yourself and if YOU feel up to it get back into more swimming. Are any of your meds causing this? Zoloft can, as can Temazepam. Maybe talk to your pdoc this week and find some meds that don't cause weight gain but treat your symptoms. I was on Olanzapine (Zyprexa) and put on 4kg in 2 weeks so I stopped it and am now trying Abilify which is lowering my appetite and not making me gain weight.