When you first started to have symptoms, you probably saw your GP. Your GP is your family doctor, who deals with all types of general health worries and problems.
They may have referred you to a specialist for tests, which are usually done in hospital.
If the tests suggest you have cancer, you will be referred to a cancer specialist at the hospital. You may be referred to a teenage cancer unit if there is one in your area.
At the hospital, there will be one expert doctor who is in charge of the team that cares for you. This person is called your consultant. Every time you go to the hospital (for anything from a test to an overnight stay), the consultant will send reports back to your GP so they know what is happening.
We have put together a list of healthcare professionals you might meet while you are in hospital. The list also includes some different professionals who can help with things like money and work. It will help you to understand their jobs and ask them the right questions (see below).