First, stop. Breathe. Relax. It's September now, the MCAT isn't until April, and you can't apply until June.
This semester, focus on rocking your prereqs and getting good extracurricular experiences. You don't want to start studying for the MCAT now because you'll probably burn out. Worry about that next semester.
Be thinking about who you want to ask for rec letters, but it probably won't hurt to get to know your professors for another semester. If you have letters and everything else square with your premed committee before the end of the school year, you should be fine.
Even once AMCAS goes up, you don't have to submit in early June because many schools don't send out secondaries - even automatic ones - until mid-July. I was processed 7-13 and still got the first wave of secondaries.
Applying is a long, hard slog, so don't start freaking out about it this far in advance. Believe me, you'll have plenty of chances to stress during the cycle - just look around at us neurotic applicants on SDN. 🙂 Good luck!