When did you notice the bruise? How big is the size? Since when have you not passed urine? What was the reason for your hospital admission? What was the treatment done in hospital?
Yes you can attach the picture through the tool box on this page or sending the picture to firstname.lastname@example.org.
The bruise is very significant and there can be many reasons for this including blood collection in underneath tissue, some infection, bleeding disorder, drug reaction, etc. Needs to be evaluated by a physician as soon as possible to ascertain the extent and cause.
Feel free for your follow up questions.
Needs an attention by a physician. Visit to ER would be prudent.
Wish you a speedy recovery.
Yes. It is better that it is examined by a doctor. Would give lot of peace in mind.