How am I not in active labor yet?!

Ar

I’m ending my 38th week today. (6hrs away from midnight)…I’ve literally been feeling like my whole pelvic floor is very very slowly splitting open for the past 4 days. I really can’t believe I’m not in active labor yet. Haha 1 week ago I was 2cm dilated. I’m thinking I’m still progressing and maybe just having an extremely slow labor. Wondering if maybe my body is more flexible since this is my third pregnancy and maybe things just aren’t as painful and I’m actually more dilated now than I was with my first two at this pain.