Mcdonald's gave me food poisoning

On Tuesday 9 June, my son in law and I ate at Mcdonald's before going to the movies. I had a childrens meal (cheese burger, chips and juice) and my son in law had a big Mac. We had nothing to eat and drink at the movie. In the early hours of Wednesday morning, approximately 7 hours after eating, I was ill - my stomach was terribly upset and I could not even keep water in. The thought that I a grown woman was so seriously sick imagine how ill a child could have been. It was obvious that something in the food was off. I have been unwell for 3 days - and I think that the hygiene of the restaurant needs to be looked at.