Ah, yes, "What's available" does make a difference. Coke has the added benefit over dioralyte et al of not making me throw up - not what you want, really! Can you bring a bottle of tonic/whatever in with you? I got through a lot of bottles of ginger beer in the first four months of the pregnancy!

And it's very easy to feel paranoid when you feel like you're being ignored by someone you love.