Mucus plug or discharge (TMI PIC)

Brittni

I’ve lost what I think was some of my mucus plug over the last two weeks on two different occasions it was like a yellow/white colored looking discharge. Basically what you see when you look on google images. But then tonight I’m 37w4d and me and my fiancé had sex and he didn’t finish inside me and I didn’t finish either but about a hour afterwards I felt wet and felt down there and saw this. Is this discharge or more of my mucus plug?