For the last week or so, I have been feeling something in my stomach.To me it feels like I did when I was pregnant with my first two when I was about 3 months...I have still been having my periods although I read you could still bleed and think it is your period but it's not. Does anyone have any suggestions? some people say it is gas, but can u have gas for over a week straight and feel it more when you are sitting down or still?