I have this really strange feeling in my lower abdomen. It feels kind of tight and heavy, and I feels a bit uncomfortable (not painful) especially when I sit down. I felt a sharp pain (like a tugging or twisting feeling) in my abdomen which lasted about 10 minutes 3 days ago. I couldn't stand up it was so painful and then since then i have had this strange feeling of tightness and have had some period cramps.Yesterday I felt nauseous most of the day it came in waves but today not so much. I stopped taking the pill over a year ago and had sex 6 days ago and my period is due next Friday. Is it something I should worry about or go and see a doctor? Has anyone else experienced anything like this?