Re: painful mouth
It sounds as though there is a big time infection brewing. You really MUST get to a dentist for an evaluation and antibiotics. It won't go away without medical intervention. The pain may go away but the bacteria will still be in the tooth or surrounding area and the bone holding in your teeth will be dissolved. The teeth where this happens will fail.
With what you described, it's a serious infection with complications involving the lymph nodes and surrounding tissue. You MUST get to a dentist or go to your local Emergency Room. Do NOT let this go. Your general health depends on it.
My very best to you,