first of all - ASICM is good choice.
second - prices are going up and down...
third - "few months" you say?
in few months from 15 BTC worth of ASICM shares should be
more than 27 BTC worth without any trading (or so) due to price increase in this time frame.
are you sure having no losses instead of gain?! doing bookkeeping of your operations, right?
you already SHOULD know that it's bad to invest more than... uh, i know you know that
there are pretty simple and basic trading fundamentals and is good to read about i think... google maybe?
btw.
buying is ok, but do some mining too (if you can/didn't yet). just to know more about bitcoins... try at least.