What is the Antibiotic treatment for gram negative diplococci?

If it is a gram negative diplococci it is most likely from Neisseria (gonorrhoeae). You can take Ciprofloxacin, a single 250mg dose should do the trick. Other drugs include:

-Amoxicillin 2 g plus probenecid 1 g orally-Ampicillin 2 to 3 g plus probenecid 1 g orally-Azithromycin 2 g orally-Cefixime 400 mg orally[8]-Cefotaxime 500 mg by intramuscular injection-Cefoxitin 2 g by intramuscular injection, plus probenecid 1 g orally-Cefpodoxime (Vantin) 400 mg orally-Ceftriaxone (Rocephin) 125 to 250 mg by intramuscular injection-Ciprofloxacin 500 mg orally-Levofloxacin 250 mg orally-Ofloxacin 400 mg orally-Spectinomycin 2 g by intramuscular injection

Also be sure to check for Chlamydia (signs and symptoms may show up a few weeks later). Those two go together like peaches and herb.

Treatment includes:

-Azithromycin-Erythromycin-Doxycycline/tetracycline,-Cefpodoxim proxetil-Amoxicillin-Zithromax