ill after eating milk shake

I came to your McDonalds, 8th Street/Louise St, at approximately 7 p.m. last night 13th October to purchase just a small Vanilla milk shake. It seemed to be fine, but not long after I had this milk shake, about 1 hour later I started to feel really not well. I managed to get home, and decided I would go to bed it was around 10 p.m. but in the night, I really did not feel any better. I had eaten earlier with my family and they were fine. So, I believe it was the milk shake. I would suggest that you should make sure that your equipment is cleaned out, I then spent the next hour throwing up - and feeling totally worn out. I did not take any other food or drink only the milkshake.
I still not doing too well. If no-one tells you then how can you investigate the problem. Perhaps a few more people have been illl, who knows, but I needed to let you know.