What - or who- has scared you? Where does the idea that you are “trapped” come from?
Have you spent any time looking at the curriculum (core & majors)?
IMO, the SFS community is the most diverse & interesting group at Georgetown (and the least “pretentious/cliquey”, but same as any college if you get there & find it doesn’t suit you are not trapped. Transferring from SFS to the College is pretty straightforward. Transferring from Georgetown to a peer school is possible.
From your other thread you are deciding between Journalism or IR as your major, and the proxies for that choice are NU and Georgetown. From here, it looks as though you are having cold feet about committing, about making a “wrong” choice- but with those 2 schools there is no ‘wrong’ choice - unless it ends up in a lot of college debt, b/c both those fields are poorly paid (at least at the beginning / sometimes always).
Fwiw you don’t have to do either journalism OR IR, and your preferred path of college → journalism → law school → diplomat is only one possible path. For a start, law school is not a pre-req for diplomacy. And, depending on what you like about journalism, that can be a part of a state department career.
You are going to have to let go of being so afraid- it will be a big obstacle to success either in journalism or diplomacy! Don’t tie yourself up in knots trying to figure out your whole life: take one step at a time: right now, this path looks more interesting / more fun / more challenging (in a good way) / more exciting to me. Choose that one.