So I ve had this weird feeling like my belly button and urethra are attached by a string and that string is being tugged on. It s happened to me before, usually when i stretch my arms over my head, but typically it goes away within a couple minutes. However, this morning I stretched and that tugging feeling happened again, only this time it was the most painful thing i ve ever felt. After that happened I couldn t stand up straight for hours (whenever I straightened my body out it felt like that string was being pulled tighter and tighter) , I was nauseas, dizzy, short of breath, had difficulty concentrating, very lethargic...what possibly could have caused this??