I think those two years have set you up to hold a certain level of expertise in health care. You've probably got, or are in a position to get, a great deal of patient interaction and other experiences that are very relevant when applying to medical school.
Naturally, you will have to ask yourself why you want to abandon your training as a paramedic and enter medical school. The admissions committees will ask why you have chosen to leave one profession and enter another, as they may be concerned about your commitment level. No big deal. We have former pharmacists, physical therapists, occupational therapists, fire fighters, the whole shebang in our class. You should just be prepared to explain your decisions, and back them up with some personal experiences that convinced you that being a doctor is where you want to be.
Most importantly for yourself, you will need to check out the medical admissions pre-requisites for each school that you are interested in. I would consider it quite unlikely that the admissions committees will accept courses you have taken towards the paramedic's diploma, but I would certainly ask.
This means that you've probably got at least two years worth of pre-requisite undergraduate courses to take, which will simultaneously prepare you for the MCAT. Then you'll be ready to apply, and do all the other things I've listed on my web-site. :) It's a long haul, but if being a doctor is what you really want to be, it'll be worth it in the end.