Hey ladies! 1st off sorry for the picture but I need to know...

On Wednesday I went in to the doctor. I am currently 37 weeks and 4 days. I am a first time momma. At my appointment my doctor checked my cervix she said I was only 1 cm dilated and 20% effaced. I bled after she checked my cervix and it slowed down immensely yesterday. Well today at work I went to the bathroom wiped everything was fine... then I stood up and felt that horrible feeling that you get when a gush of discharge comes out of your vagina... I immediately pull my pants back down wipe and this comes out. It seems like the brown blood has increased and now mucus has also been added to the mix. The doctor also said she was going to try to strip my membrane a little bit but my cervix was pointing to far back but she did try so I could see what it felt like. Could this just be from the membrane stripping? Could it be my mucus plug? Is labor just around the corner? So many questions! Any help from a more experienced momma would be greatly appreciated! Thanks!