I am 17 weeks pregnancy, I have been going to pee at late nights now suddenly I don't pee in the night. Is this normal?

Yes. As the uterus moves up with the growing baby, and not press on your urinary bladder as it used to in early pregnancy. You may experience urgency again in late pregnancy when the head of the baby comes down in the pelvis and presses on the bladder, wish you a healthy pregnancy and a healthy baby .