Weird Bridge and After

I had to walk up a bridge with 2 boys that were schoolmates to get to school but it was really steep and on the freeway. Aftwr almost getting hit by a truck we got to school and it went to thw bathroom and when I sat on the toilet blood poured out with these 2 big chunks that I thought waa blood clots or tumors. I had been having bad atomach pains prior. My mom picked me up and took me to the doctor but i woke up before we got there. She told me to bring the things and we would have them run every possible test.