Just two days. I haven't even checked out what I could or should see!

I'm just so excited to be going somewhere. I've only flown on an airplane once before (to London) and I've never changed flights before. I hope everything's gonna go smoothly.
Oh incidentally, silly question but, is someone going to make problems about me taking sleeping pills with me? Do they check for that stuff? Loads of stuff I haven't even considered.