Is this the real thing or the start of it?

Shante

I noticed this morning and during the day that I've been loosing my mucus plug. Hours later I'm now getting this period cramp feeling in my lower back that seems to be a little more intense than normal. I dont want to rush to the hospital for nothing especially bc I'm only 36 weeks, although my doctor said I'm mesuring at 38 and started dialing on Friday. Not really sure on what I should do.