Bathroom Question 🙈

FTM here and I have been wondering if this is normal.

I have been trying to increase my water intake since becoming pregnant, I am now 13 week. Before becoming pregnant I did not drink much water at all. I’ve noticed when I haven’t drank much water in a day for whatever reason (I’m a teacher so bathroom breaks are hard to get), I feel almost the UTI feeling of needing to go to the bathroom and not accomplishing much. Is that normal? I don’t know if it’s my body’s way of saying it needs more? It seem to be a pattern. And then when I drink a bunch of water the uncomfortable feeling goes away again.