Everything you describe is normal.
It is perplexing and depressing, and tiring and infuriating. But it is worth it. I had my op in august 2008 - I am coming up for my 3 year anniversary.
It is perplaxing because everyone responds differently so no-one can tell you exactly what will be happening to you. Even you will respond differently from one day to the next. It is depressing because it all seems so slow and you want to get better fast. It is tiring because it is a massive op and it is infurinating because just now you can't call the shots like you used to.
BUT everything will get better. Exercise is important. I always found that if I had a day when i didn't make the effort to exercise that I hurt more and had more trouble with my food. The trick is trying to get the balance right, because if you do too much you don't just get tired, you get exhausted. I have always been an 'I've started so I'll finish' person and that just doesn't work anymore. You have to stop when you've done enough and rest before starting again. I didn't do anything like changing sheets for ages longer than you. If you do not have anyone to help you do the more strenuous jobs, then try breaking them up and doing them in a few goes with a rest in between. You will get more done that way.
The food issues last a lot longer. It took me a year to tolerate wine. I was better with an aniseed or even a dilute gin and lemonade, though in the beginning we used to make the mixer with lemon, water and sugar because I couldn't handle the bubbles!
Recovery does not even just proceed gradually. It is 2 steps forward, one step back, but gradually I have got back to a good place. My biggest problem was dumping, but that is very mild now. I am back to gardening and decorating - though in smaller chunks than I used to. I enjoy walking along the cliffs where I live, and my life is good again, as yous will be.
Be patient, you have done the worst bit. Please believe things will get better. Just eat small amounts very frequently and keep active and you will get stronger and stronger.
Sue