Severe constipation

B
Ok so it's been a few days since I've pooped and I've tried to go but haven't had much luck. Now my side and the bottom of my belly hurt severely and I can barely stand or walk. I know it's because I haven't been, but it won't come! I am all but in tears from the pain, and I don't know what laxatives are safe. Anyone else suffer from this? I'm 21wks exactly