Know that your passion and your job will not always coincide, but when it does you will wake up excited to go to work everyday. A mentor asked me one time, “What would you do for a living if money was not an issue? Would you do it even if you would not get paid for it?” He said that was the way to know that you found the right career.

I think he was right in determining your passion in life, but as for a career, you have to be comfortable with your earning potential, less you become bitter and stressed out about life. Subsequently hating your passion.

Honestly, if I were you (and taking a look back on my own career path), I would double major, and take an extra year in school to complete both degrees. Take time to do an internship in both (realizing you probably will not get paid for your communications internships unless its PR or marketing). It is truly okay to have a more stable major like Pre-med and something that stirs your passion like communications. Most hospitals and insurance companies need PR reps and event planners. Having a background in both could be a way for you to find a niche market w/communications.

More importantly you are not closing the door on either. The toughest thing is realizing that you should’ve done one instead of the other and having to go back to school to make up those additional hours. It is definitely possible also that your Communications degree can fuel your hobby, or a later career change. I still end up volunteering with local groups, teaching kids how to write/create newsletters, community event planning, and involved in local journalism organizations.

…And as a side note, law school is not to be taken lightly. Try reading some books on surviving law school, and talk to some law professors and students before committing 3 years of your life (or taking out student loans). You can also try an internship (criminal, corporate, entertainment) while you are still in school. It is a good way to score brownie points w/law professors of programs that interest you, but more important it will help give you clearer direction.

I hope this helps. Good luck with your decision!