clearly all this sugar free drinks isnt good

I'm a few weeks out too, and though I'm toughing it out with water, I've noticed the taste varies and my tolerance varies too.  At first I couldn't handle it cold so I went to room temp, and then room temp was making me nauseous so I switched back to cool (not cold) and that is working. Every taste and smell is heightened since surgery so my water has to be filtered.  Anything warm (herbal tea, broth) just makes me and my pouch very happy.  

I think there are lost of things you can add, natural and artificial, to get it in - but let's not let it get to the point where we can't even face that bottle!  Do what ever it takes for now.  You can try straigh****er again in a few weeks.  Looks like our tastes change a lot, especially now. Hang in there and bottoms up :-)