Could i be leaking fluid?

I’m 29 weeks today. Had some mild cramping this morning but nothing crazy, it almost just felt like stretching. I have been leaking this watery very SMELLY discharge. It’s not pee because I smelled it and it just stinks so bad. I can’t tell what color it is but it looks clear to me. My boobs also hurt more than usual today. I called my dr but just waiting to hear back. Could this just be a result of stretching? I had an ultra sound yesterday and everything was fine, he was also head down.