I would also get very lethargic.

drink lots of water lots if not you could go into labor I did when I got dehydrated and if I didn't go into the hospital then I would have had my baby at 30weeks cause I was sick and didn't keep anything at all down so I was dehydrated and I had to go to er they stopped my contractions and hooked me to fluids.

also if you're thirsty you're already dehydrated. you could also experience cramps in various places. I know it can cause contractions as well.

Your joints in your hands or even other places hurt, sometimes your urine is cloudy and dark yellow, you can barely pee, there's a lot of symptoms!