With the symptoms you are having, you really can't afford not to see a dentist or at least someone in the medical profession. It's very possible that you had an abscess. Dental problems can most certainly lead to medical problems.
I urge you to make an appt with a dentist and see if you can work out a payment plan. Dental health can be directly related to medical health and chest pains are nothing to fool around with. Make the appt or have it checked in your local ER.
My very best to you,