How much water are you drinking per day right now? Do you know? Can you keep track of that? Drink water to drop water. 2.5L is the recommended amount of water for normal individuals. If you engage in regular physical activity, and/or live in a a hotter climate, add to that. I carry around a 2.5L polycarbonate bottle similar to
this one and refill it a few times a day. The material it's made of is antimicrobial and resist fungus. YOu still have to wash it but it is safer than refilling the vending-machine water bottles.
Hot weather does affect your water levels as well -- if you're not drinking enough water. That actually happened to me a few weekends ago when it hit 118 here in phoenix! gross to say the least.
Other possibilities...
Have you been watching your sodium intake?
Do you have any food allergy or suspect one? (some foods, like wheat and dairy, can cause bloating if you have an allergy)
Also, if you're taking caffeine on your cut, you NEED to drink more water. caffeine is a diuretic and if you're not drinking enough water, you will retain.