Hello, I am felling pain in left as well as right of my lower abdomen sometimes it pain in back of abdomen too. The left and right lower abdomen pain like hell sometime. I had my period on 5th of sep on this month. And previous months (August) I didn't gt my period, may be because I was under going medication of allergic asthma. Now from last 10-15 days I am felling this pain. Previous I never gt any pain like this.