Over the past week or so, every time I get up I have a fairly sharp going across my pelvic bone. I sit at work all day, so not sure if it's just from sitting too much, but even at home it does it. What could this be? I also am just feeling more pressure in that area in general - maybe this means the baby dropped or is dropping? Someone told me it be round ligament pain, but I think it lasts too long for htat. It's pretty much any time I walk.