as per the information provided by you , i can see that you are having acute periodontitis
where there is acute infection in your gums.
i would suggest tetracycline
instead of penicillin , as tetracycline is more effective in soft tissue
the treatment for periodontitis should have been started also. i dont think that your present dentist
is capable of solving your problem. she should have started the treatment long back.
consult a periodontist. he will guide you to perfect dental health after properly diagnosing and doing periodontal surgery and saving most of your teeth.