could this be contractions?

I'm 37w4d. I'm not sure if what I'm experiencing are contractions (Braxton hicks or real) or if it's neither of those lol. I'm not having any pain, and it doesn't really feel like cramping either. But I keep getting a pressure type feeling, kind of in my butt. 😂 almost feels like I have to use the restroom. It comes and goes. Doesn't last super long. Not sure if I need to be timing anything because I don't know if this is what a contraction can feel like?? I have experienced some Braxton hicks through out the pregnancy but they didn't feel like this. I'm just not sure what this is. Any experience?