What do I do??

Ladies I need your help!! Today I am supposed to go with my mom up to her doctors appointment. It is about 2 and a half hour drive. It gets dark at 5 and her appointment is at 4:30. I know I wouldn’t want to drive through the canyon alone at night. I am sitting here though and haven’t been able to leave the toilet. I have the shits like nobodies business. I also have a head ache. My mom has no one else to go with her. I took an Imodium to help with the diarrhea, but it’s not helping. Idk what to do. I don’t want to just ditch my mom, but I don’t want to shit myself on the way up there or back.