33+5 weeks pregnant

Today I have been having a lot of low stomach pressure and I’m only 33+5 weeks pregnant is that normal. I have no bleeding and my baby is kicking and moving like he should be. He is head down and I’m 3 centimeters dialated last i was checked when I got taken to L&D because of early labor but they stopped it. Now iv been home for 4 weeks and the pressure is so bad only when I stand up I can’t even stand up straight.