I'll be 38 weeks tomorrow! I don't know exactly what to expect and understand everyone is different.…

I'll be 38 weeks tomorrow! I don't know exactly what to expect and understand everyone is different. I haven't had an actual period for 5 or more years but lately I've been cramping more and more as well as some additional pressure down there that comes and goes. I'll notice my back tense up a few times too. is this just braxton hicks, round ligament pain, or the start to labor?