Act quickly and get in touch with medical negligence specialist like Leo Claims or other specialists near you. Some cases become void after 3 years, so it is essential that you claim as soon as possible. A specialist solicitor will often offer a free consultation and also be able to answer all your questions and help you proof that you indeed have a valid case.
This is a promotional post, but I hope it was helpful and gives you some useful information. Image from Tim Samoff via Flickr.