I had a perianal abscess drained 12 days ago. I'm on antibiotics. Today I woke up really dizzy is this related? Also the abscess has been drainin still

Abscess. Possible that your "dizziness" is related. Would call and discuss with the doctor treating you. Not uncommon for the abscess to continue to drain and this may actually be a good sign. Hope this clears up soon. Good luck.
Too much antibiotic. You have taken enough antibiotic for the condition. Too much antibiotic could be harmful too.