Please help

blossom2112

Hi I was diagnosed with Ovarian cancer and have had to have a full hysterectomy. Prior to this I have always weighed 52 kilos. I am 5 ft 2″. Since surgery I have jumped up to 60 kilos. In the last 4 weeks I have now increased to 65 kilos. I have had coeliac disease since birth and always need to stick to a strick gluten free diet. If anything I eat too little and not enough colories per day yet I always eat healthy foods like salads, fresh meat, fruit and vegatables and only drink water. Im just confused why I am gaining so much weight. Can anyone help me please to get back to my original weight? Thanks