Too much water?

I’ve had a sore throat for 2 days already, so I think this is the beginning of a cold ): I’m usually super good about drinking water about 8-10 a day but no matter how much I drink my mouth is still super dry😑 it’s 2:00am and I wasn’t feeling much movement so I sat down and started drinking ice cold water and I started feeling movement but my mouth is still SO dry!!! I’m on my 3 rd water bottle but I’m a little nervous that I may be drinking too much water in one sitting. I’ve gone up once to pee but I’m wk drying if this could be bad or should I just keep drinking?