drop? labor starting?

Dana
So I've gone into preterm labor twice now and they stopped it but now I'm at a point where they're okay if I have him. I've actually been feeling pretty dang good the past 2 days and then today around 1 I started getting some intense back cramps (like on my period) with some cramps down low in my abdomen. It's been sort of off and on since then and then starting like 30 minutes ago I've been getting some more consistent contractions that are kinda painful and I've also had diarrhea all day (I've heard that's a labor sign) and then I noticed it looks like my baby dropped. What do you guys think?