My advice is that more than likely, you will change your mind even once you get to college. Many, many people I know changed their majors completely, or the specific field they're working towards. I came into college as a pre-medical student; however, I realized that it really wasn't what I wanted to do at all. I'm now a biology and anthropology double major, and I'm currently applying for PhD programs. The courses you take freshman year allow you to explore and get an idea of what you truly enjoy pursuing. It also depends greatly on who you meet along the way. Certain professors may provide you specific opportunities and guidance which shape your interests and allow you to develop connections. You 100% do not need to know exactly what you want to do going in. Whatever you choose freshman year is not set in stone, so my advice is to maintain an open mind and trust your gut on what feels right for you.