Just wanted to say, even though your 21 weeks, morning sickness can come back at any time.
I had problems with tap water last pregnancy and this one too. I found adding a bit of juice or lemonade mix to cover the taste worked along with letting the tap water run for a minute first. Some days I can still taste it and just can't do it.
Normal water can be quite high in adic, Fiji and Evian have been proven to be more high alkaline . Any other bottle water or tap water is high in acid and other chemicals.x
Tap water did the same to me too... I now have a filter and that has helped A LOT!
It happened to me when my SO changed the type of water we bought at home. I always buy the Kirkland brand water from costco. I'm able to drink it cold or at room temperature but while I've been pregnant the only water that doesn't gross me out is Fiji water. When he stopped purchasing Fiji water, all water became gross. So I now have to drink cold water. Lol. My baby is a picky little boy.