weird feeling down below at 19 wks

I sometimes have a feeling of something in my vaginal. My fear is my bag of water is protruding. I fear that because I had some spotting at 16 wks currently 19 wks. None for over a week now. Yet some days I feel a weird feeling down there and sometimes a slight pinching. I have such anxiety over this. Does anyone else? Please share with me your thoughts.