why am i soooooo thirsty?!

It's good, that you are drink water, but you need to be careful- too much water is not good as well because:

Ingesting more water than you need can increase your total blood volume. And since your blood volume exists within a closed system - your blood circulatory system - needlessly increasing your blood volume on a regular basis puts unnecessary burden on your heart and blood vessels.

Your kidneys must work overtime to filter excess water out of your blood circulatory system. Your kidneys are not the equivalent of a pair of plumbing pipes whereby the more water you flush through your kidneys, the cleaner they become; rather, the filtration system that exists in your kidneys is composed in part by a series of specialized capillary beds called glomeruli. Your glomeruli can get damaged by unnecessary wear and tear over time, and drowning your system with large amounts of water is one of many potential causes of said damage.

Regardless how thirsty you are, you should sip the water, rather than drinking whole glasses at once. Also remember, the best amount of water per day is about 2l-2.5l

I've heard that's one of the signs of diabetes. Are you always thirsty, or just right now? If just right now, you could have gotten dehydrated and just need to rehydrate. If it's all the time, you should talk to a doctor.

If you are mildly to chronically dehydrated, it might take a day or two of drinking lots of water (6-8 glasses per day) for your body to rehydrate. Then you won't feel so thirsty.

you should check with doctor

u probually excersize a lot

you're turning into a mermaid