Labor symptoms?

Brittany
I'm 36 + 3... Had a cervical check yesterday and found out I was 50% effaced and a cm dilated. Not much to be too excited about! I've had contractions on and off all day today,  as well as cramping and some loose bowel movements too! Lots of pressure! Bub is measuring 3 1/2 weeks ahead... Should I be concerned about going into labor at this point?