TMI could this be part of my mucus plug?

I’m 40+3, have been having Braxton Hicks for weeks but nothing painful. Lately I’ve been feeling a little more crampy and went to L&D yesterday because I was having mini gushes of clear watery discharge and thought my water was leaking but I was wrong. Today I have this thick brown discharge, but otherwise feel fine today. It’s the first new thing I’ve seen in weeks. I’m not sure if this is part of my mucus plug, and I haven’t had a cervical exam or had sex recently so I know it’s not from irritation.