Could it be?

I’m 36.5 weeks pregnant and my doctor said since I been having preterm labor it won’t take much to make me go into labor! But I have been having much more recent sharper vaginal pain and so low back pain and pelvic pressure! I have noticed more TMI white thick discharge and I been using to bathroom (#2) a lot more but it isn’t diaherra but it’s easy to go! Could labor be soon??