uk.askmen.comWater
The symptoms you're feeling post-drinking are signs of dehydration caused by the alcohol. That's why you must rehydrate yourself by drinking a lot of water when you get up.
Rehydrating your body is the key to recovering from the hangover, and this cannot be stressed enough. You can even put some lemon in your water, it'll help soothe your stomach and will add vitamin C.
When drinking water, avoid water that is extremely cold or hot; drink water at room temperature.
Coffee
Even though you're extremely tired and a cup of coffee seems like the best way to wake you up, try to stay away from it.
Caffeine will only dehydrate you more, and since it's also a diuretic, it will not help your stomach. Milk and other dairy products are also not a good idea; they may make you feel more queasy.