I have a pulling & pinching discomfort from my below my belly button down to the very low pelvic area. It feels like someone has a string & they are just pulling on it. It does it when I stand up straight or when I am stretching. I am on my cycle right now. There is no burning or anything during urination. I am just curious what it is cause I have felt it a couple times w/ in the last 3 or 4 months.