Hi Debs, others have given really good ideas of where to find protein other than in meat and fish; cheese, eggs, nuts, beans, milk, yoghurts etc. My dietician says eggs are the best source as they are absorbed very easily by the body.
In my experience though it is way too easy to become obsessive about the amount of protein you are getting in a day. At 4-6 weeks post op I worried about it constantly and would only eat foods with huge amounts of protein, nothing else. This totally took away what little enjoyment I had of food, so, on speaking to my dietician, I relaxed and just made sure I was getting some in each day. Since then I find I naturally sway towards high protein products but I do make sure I enjoy other foods too. I haven't used protein shakes for ages and the weight is still coming off fine, if it slows down or stops then I will use them for a quick boost!
Cuppa xx