Dear friend, welcome to HCM.
it looks like a bothering diverticulitis
are you already on any regular medicine for that?
if you have disturbing, pain, diarrhoea
, fever, nausea
, vomitting, you should get an early consultation for a possible infection again a/ abscess
. it may rupture with serious sequeale. if symptoms worsen , see asurgeon than a gastorenterologist. if appointment is difficult, go to EWR in emergency.
if milder, see your GP or physician first.
do not neglect anyway.
take care and keep me posted on your progress.