<p>You sound like you are understandably scared that if you talk to them, all of a sudden, they notice and rescind you. Even if that were the case, you should talk to them. </p>
<p>Worst possible scenario is they find out later and rescind you after you already turned down your second choices, and you are off to community college.</p>
<p>Instead go ahead and call them. If your call prompts them you rescind you, it means you would have been rescinded later on anyway. It is better to find out now, so you can make alternate plans.</p>