Hi.
Thanks for your query.
Read and understood the problems.
This looks to be a complicated problem as you have undergone
appendectomy and now have blue and black stomach and pain in the testicles.
This indicates to me that you have a
cellulitis of the abdominal wall secondary to the infection caused at surgery.
This may be the reason for the pain in the testicles.
I would advise you the following:
Rush to the Emergency Room / nearby hospital and ask for Surgeons opinion.
Ultrasonography of the abdomen, abdominal wall and
scrotum.
This will give the probable diagnosis.
You may need an admission to the hospital for intravenous fluids, antibiotic,
metronidazole and symptomatic, supportive treatment.
Be ready for another Surgery related to the abdominal wall and / or the scrotal skin if required.
Proper antibiotic treatment and SOS Surgery will help you to recover fully.