I agree with her. I ate something and woke up in excruciating pain and it was just a bm. But if nothing comes later don't be afraid to go to the hospital.
Try using the restroom. If you can't, drink LOTS of water and then try going a little bit later. You may just have to... Sorry TMI, poop. If that doesn't help, and you feel like something is wrong, don't hesitate to go to the ER. Good luck! (: