I am highly allergic to pennecilin, ceftin, and sulfa drugs. i was anaphylactic with penicillin. i am now second guessing if i should get the covid vaccine.... is it safe?

Unrelated: Given that the available vaccines share nothing in common with the drugs you mention I would not hesitate to get the vaccine.

Yes, its safe: There is no penicillin, cephalosporin or sulfa in the vaccine. There are no reports of increased reactions to the vaccine in those with such allergies. So yes, its safe. However, because of your history of allergy to many drugs, the vaccine center may want to keep you there a bit longer (30 min as opposed to 15) just to make sure

COVID 19 vaccine: I agree with Dr. Lentnek and Dr. Ferguson. Allergies to these medications are not a contraindication to getting a COVID 19 vaccine.

Anaphylactic history: I'm instructing anyone with any history of anaphylaxis to only get the covid vaccine where medical care including availability of epinenephrine, Benadryl and parenteral corticosteroids are readily available. This may be overdoing it, but the goal is to be prepared. You will also need observation for 15-30 minutes after your vaccination.