I feel worse in the morning if I've hit it hard than when I'm not flaring. and bleed more
But I seem to be the same if I drink diet coke alone as when I have JD with it. so think its more the caffeine and fizzy drinks. but one or two never seems to have harmed me.
Saying that, each flare up seems slightly different so far, just started another one, i noticed it was hurting without a drink so sat by the fire with a hot water bottle and a tall drink on saturday.
Generally resting your body helps you get better though, which drinking doesn't do but its swings and roundabouts.
if your body says no, i'll have a mojito in your honour!