Hi,
Welcome to health care magic,
Diverticuloum is a abnormal outward projection of mucosa of colon.
When it is get infected,it is known as
diverticulitis.
You might have infection of this leading to stomach pain,
diarrhea,
vomiting,
flatulence etc.
You can take antibiotics ( quinolones or cephalosporins) with antiprotozoals like
metronidazole,antiemetics,antispasmodics, probiotics and other supportive treatment,your family physician may prescribe it.
Also, you have to be careful regarding dietary restrictions which should be low fat and high protein.
But the main cure is the only surgical removal of diverticulam because of repeated gut infection or they could be also chances of complications like peritonie,bowel obstruction etc.
So,better you see gastrosurgeon and take advise.
Regards,