Is this labor?

As
Since about 7 ive been having a dull throbbing in my back along with a sharp stabbing pain in my vaginal area..since this morning ive had alot of pressure in both my vaginal/rectum area i think ive been loosing parts of my mucus plug (no blood) im 37 weeks as of yesturday and at my last dr appointment a week ago i was 1cm dialated ive had braxton hicks but nothing strong or consistent..just really uncomfortable i have a dr appointment tomorrow just curious on what you ladies think? Have any of yall experienced this and had your baby