If the police weren't called at the time it may very well be that you won't ever be criminally charged (though it is possible). You may, however receive a letter from an attorney or collection agency demanding that you pay them money on behalf of the store. I generally advise clients to ignore these civil demand letters. You don't owe them anything. In order for you to owe them something they would have to sue you, (in some jurisdictions prove damages which they most likely couldn't do), and win. Even if they could win, the cost of pursuing this is substantially greater than any amount they can possibly recover so they usually don't. They send out these letters because it doesn't cost much and they are hoping that you don't know better and simply send them the money. Nothing will happen to you if you don't pay it and it will have zero affect on whether or not you will be criminally prosecuted. If, however, you do receive something from the courts do not ignore that and seek the assistance of an attorney ASAP.
You are more fortunate than most in this situation. Had an officer been available you would have found yourself in a huge mess over the mishap. While unfortunate as it is that you have to wait and see if this will ever turn into anything, chances are it won't and you should try and return to life as usual. Maybe check on it in a few months, but worrying about it now won't help because there is not much you can do about it at this point. If it does ever turn into something, get an attorney ASAP and don't make any statements. Even acknowledging you were there could give the State more evidence than they already have. And what they already have may not be enough to proceed once it sees the cold bright lights of a courtroom and a prosecutor takes the time to review it.