Service dog for POTS

Do you guys think a service dog would be available and useful for someone like me with POTS who passes out very often?( like 1-2 times a week) I’m going to college next year and I want to stay on campus but my parents are worried about me being alone because what if I pass out, hit my head, and no one hears me? Any ideas on what I can do to be more independent and not let POTS alter my life goals?