1. Dont pick a career just because it's what your dad wants. You are 21 -- he's not going to "kill you" for getting bad grades - you are an adult. Own it.
2. Your GPA is salvageable. With some hard work and retakes you can get it up to passable. But no, you don't want to apply to med school before you fix things.
3. Your writing is atrocious -- get someone else to read your essays when you ultimately do apply,
4. Taking a year off and being 21 isn't relevant, the average age of all med schools is older than this and many people don't start med school right out of college these days. this isn't a race.
5 there's a "what are my chances thread" that might be more suitable for what are my chances posts.