You were accidentally kneed in the front of your neck and it really hurts to swallow Should you be worried?

No, if you can breathe ok and swallow. It is swelled and will help if you put ice on it. See a doctor as soon as possible. You could have damage to your trachea (windpipe). If this is not treated correctly, you could quickly lose the ability to breathe. This can be fatal in a matter of minutes.