I'm a junior in high school and I'm thinking about the military life?

I recently stayed on cheery point for a weekw ith my bestfriend's dad. He's a warrant officer in the marines and I absolutely loved it. I've been thinking more about the military since my boyfriend who came home from boot camp broke up with me. I feel like it would make me a stronger person because I'm a little weak emotionally and can be stronger physically. I also don't have a lot of money I'm the first one in my family to actually do something. The only thing is I don't want to fight in war. I want the marines. But I talked to somone in the ROTC program and I want to larn more. She said I could go in the navy because the navy is like connected with the marines. My dream has always been to be a physciatrist for people. She said I could become a therpaist in the military and still go to college to become one in civilian life. How does that work exactly. Please help me. tThank you.