I was walking around in target and had to pee then it felt like something was coming out. I went to…

I was walking around in target and had to pee then it felt like something was coming out. I went to the bathroom and I'm pretty sure it was my mucus plug but idk. My doctor checked my cervix yesterday and ever since then this medium/dark brown stuff has been coming out (not mucusy at first). I'm not sure if I'm actually losing my plug or it's just from her checking my cervix..