Too much water?

Victoria

How much water is too much? I'm 6 weeks pregnant and SO incredibly thirsty. I've been refilling my 24 oz Starbucks cup (3 cups) up between 3-5 times per day and drinking it between 8am-11pm, at most that's like 15 cups of water 😳, though I can't imagine drinking less. I'm pretty sure it isn't a diabetes or health related issue, just super thirsty pregnant woman lol.