Am I having actual contractions?

Chelsea

40w1d, FTM!

I’ve been having what feel like Braxton Hicks only a bit more intense and I can feel them from the top of my stomach down to my vagina. They aren’t consistent and it’s just been super random all day. They aren’t painful, just a ton of pressure.

So I guess my Q is what exactly is a contraction?? Am I having them or am I just thinking I am?