[Coffee.]

I don't know how to make them significantly better before tomorrow, but in the future, I'd consider getting on birth control to manage your period symptoms. It helps significantly, and makes them shorter, lighter, and with less pain. For one day, I'm not as sure. I'd get plenty of sleep, and make sure you're taking care of your body the best way possible. Painkillers are good, but remember that some make you bleed harder which may not always be helpful (for me, Ibuprofen makes me bleed a lot harder when I'm menstruating and it creates more discomfort). Also, consider what you're drinking. Some things work as diuretics (coffee) which may increase cramps; however, they may also relieve some of the pressure you get from water, so that could also help. Sorry I'm not terribly helpful; I've been on birth control for six years, so I haven't experienced a "real period" in a while.