Mark Turner:
I'm not a mental health expert, but what you describe is commonly associated with certain kinds of mental illness. Imagining that external forces are controlling you, hearing unexplained voices in your head, believing you are receiving telepathic messages, and perceiving personal messages or signs in everyday things like movies or TV, are all likely to be delusional, by which I mean they reflect what is going on in your head rather than anything that is actually happening out there in the world.
There is no shame in having this happen to you. It is not uncommon. There is also no shame in seeking help from a qualified professional. There are medications and other treatments that can help you.
It's definitely not healthy to spend a lot of time worrying about what is real and what is not. Also, things can get scary if the voices and the messages start to seem too real.
Doctors are not out to get you. They are there to help you. See your family doctor and he or she will be able to refer you to people and/or organisations that can help you.
It's great that you're taking the step of recognising that you might have a problem.