Hi about 17-18 days ago, I was on a bus driver slammed on break s and by the force I was thrown backwards so hard that I ended up where the driver box is I hit the back left side of my head, I was told I have concussion, doctor said 2-3 weeks. I also knocked out the rotation of my shoulder, but I hit my lower right side of my back but I felt pain in the front of my stomach. But the headaches are really bad, I m so upset and keep crying, please help me