Almost all of the allied health fields are in high demand. I am an occupational therapist, but also to be considered are physical therapy, speech language pathologist, physician assistant, nursing, nurse practitioner, radiology, laboratory technology and the list goes on. Also consider that there is a large field of bioethics and medical ethics that are just starting to emerge to the mainstream. Heuristics and medical informatics is a possibilities if you like IT. Make a list of why you want to go to med school or be involved in the medical field, then tease out those parts and that will help you land where you want to be. Medicine is a broad field and there are so many areas that are fascinating and fulfilling. Figure out what it is you like and then follow that path. Talk to a lot of people in a lot of different medical fields. Almost anyone in the medical field is more than willing to talk to someone about what they do!
Best of luck to you. It's great that you are asking those questions now!