Meh, shit like that happens. When I first got into college, it was extremely hard for me too. Adjusting to new schedules and trying to make ends meet on your own is only part of growing up.
hey freshman, here's some advice from someone who's a senior in college.
no one cares if you miss a some class, so it's not worth the effort to lie about it. i stright up told my professor that i didn't show up for a week because i decided to sleep in.
shouldn't be a problem unless you miss a test, but that's only like 10 days out of the normal semester.