Pressure in uterus at 17wks

I’ve been having a few Braxton Hicks maybe one or two a day, When I spoke with OB earlier she told me to start drinking more water and that I shouldn’t be concerned...but I am. One of the questions she asked was about discharge and at the time I had none but when I got home there was a big chunky mucusy glob. I’m a little crampy but nothing I would normally worry about. Now I’m having a heavy like/pressure feeling In my uterus/abdomen.

Do you think I should be concerned or is it just my mind getting to me??