Same happened to me too
I have had similar feelings! I think our bodies are just constantly adjusting and powering up our babies instead of us lol
You can always call your dr, or L&D to pick their brains. They might want to check you out to make sure everything is okay, or they might just tell you to drink more water. Always better to be safe than sorry.
I think it’s normal from the hormone fluctuations! Same thing is happening to me :) I’d just be sure to stay hydrated!