This is my 3rd pregnancy however, each pregnancy has been different. A few hours ago I noticed I was getting pressure in my bottom. No I do not need to go to the bathroom. Since then I have started getting slight cramps in my lower stomach and the pressure in my butt. I am 16 weeks. I have a subchorionic hemorrhage and worry about every little thing this pregnancy however, I do not want to call in to my obgyn unless I feel it is an emergency. Has anyone else had this?