If you are considering immigrating to Canada, you will want to have as much information as possible to ensure you understand the requirements, eligibility, immigration application process, application for citizenship, and other important details.
A good place to begin is to visit the Citizenship and Immigration Canada Web site. Here you will find information that may fit your situation. For example, as a graduate of an occupational therapy program in your country, you may qualify to immigrate under the skilled workers and professionals category. There are other categories you may want to explore, too.