BH making me feel like I have to go #2?

Kaylee

I am currently 33 weeks, and have been experiencing Braxton hicks..I believe? This is my first pregnancy so I am new to all of it. I feel a tightening across the front of my stomach just below my belly button and then pressure making me feel like I have to poop..is this normal? It lasts for like 30-40 seconds.