Could this be early signs of labor?

Samantha

I’m 36 weeks and my doctor told me Saturday that he expects me to go into labor within the next 2 weeks due to how low baby boy is already. Today I have been having lower back pain, some contracting pains but not regularly and when I just went to the bathroom and wiped there was a clump white snot like discharge. I’m not sure if that was the mucus plug or not. Any advise would be helpful. Thanks!