Hi there need help with this haven't been on plane for 13 years because i get worried about the doors shutting and can't get of plus worry if get sick?

Sounds like a phobia: of enclosed places (claustrophobia), probably along with other smaller variants of phobia (social, agora, hypochondriasis are faintly suggested here..). Find a psychologist after consulting with your MD for possible meds. Here's a beginning reference on anxiety: http://www.psychologyproductsandservices.com/page2.html

No quick fix: There is no quick fix that would guarantee that you won't have this uncomfortable anxiety which might lead to you having some physical symptoms. There are some therapeutic techniques & exercises that a therapist might be able to show you which can be helpful. An anti-anxiety treanquilizer could reduce and possibly eliminate the symptoms. Traveling with someone can be a good idea.

Plane phobia: Recommend you see a Psychologist expert in EMDR Therapy. This type of therapy is extremely effective for treating phobias. there are EMDR trained therapists world-wide. Check www.emdria.org for your nearest provider.