Theres really no reason to be concerned about it, it just hasn't been included in a block yet (for whatever reason).  Blockchain estimates it will be included in approx 6 blocks (an hour).  Its a valid transaction, its out on the network (essentially the equivalent of "the check is in the mail, and the post office agrees its in the mail, it just hasn't gotten delivered yet").  Either it will be confirmed in a bit (likely), or it will get dropped, and we'll re-send it.