Amy if it is the sweet taste you want and don't want the sugar, what about soda/mineral water with low joule cordial? I was drinking at least a litre of soda water a day when pg with Liam, sometime I had it with cordial or juice mixed into it, but mostly plain. I just loved the fizzyness of it and it helped with my quesiness and later on, heartburn. But really I wouldn't be worried about one small bottle of coke a day.