Car Problems :(

I was on my was to work today and I was all worried about being late because a) I Left Late and B) I was stuck behind a slow moving vehicle from Villeneuve all the way to Highway 16A which of those who do not know where this is is around 14 km. So as I get to the over pass I notice that my car is vibrating very bad aka it was shaking but when I slowed down it stopped and I never thought about it until I speed up again and it started virabing again and I was just thinking please do not let it be flat I have to be on time for work but yes it was flat. So now I am stuck on Hwy 16A with a flat tire so I slowly drive to the next road which was not very far maybe 250 m and pull over as to not obstruct rush hour traffic. So I call my work and told them that I would be late and then I called AMA so they could change my tire because although I have changed a tire before I can never get the lug nuts off so anyways I had to wait for 2 hours on the side of the road for them to come and I was really late for work thankfully it is over now and I am getting my tire fixed so that I can get safely home tonight without the mishaps.