hi I had my tubes tied the next day after having my second child and that was in 2005...I have never missed my period if anything my periods usually last about 10 days and are always very heavy with blood clots the size of a half dollar and it is now 2013. I had my last period almost 2 months ago and had a preg test done like 2 weeks after my last period(may 3, 2013) but came back neg, also I have been feeling something in my stomach(its not gas) on the left side a little up above my belly button, I am 34 years old. could I be preg....all my friends say no the chances of that are uncommon so if im not than please help me to understand what is going on with my body and if I should go to the doctor. please help me asap. thank you, AAAAA