You can’t afford grad school now, and if your motivation for going is “I guess I need a Master’s degree” you SHOULDN’T be going.
Get a job in, close to, adjacent to your field. Work hard and learn as much as you can. That will really help you zero in on what you want to do professionally, and will likely mean you will do better in a program which can propel you into a higher salary.
You may decide MPH is not for you after working for a while- and that the jobs you want require an MBA. Terrific. You may decide you are more interested in clinical work and decide you want an RN. Terrific. You may decide that what really interests you is global health policy-- and you decide to get a Master’s in International Relations. Etc. You get my drift.
Focus on getting a real job with health care benefits, not a series of internships. You just don’t have enough experience, information or money to tackle grad school right now.
Good luck.