Last 2 days I have been having a strong twinge on my lower right side pelvic area,not painful, just a strong twinge - when I take 2 advil it goes away. I was constipated for the last four days, and also had a quirky period, quirky because I am pre menapausal so I haven t had a period for over 10 month, but had a form of it a wk later with mostly menstral symptoms