My Son-in-law Is In Hospital With Severe Pain On His

My son-in-law is in hospital with severe pain on his right side from shoulder to his hip, the hospital has done a ct scan an MRI tested for eboli, he is taking morphine for the pain, he has recently had a bout with phenomoa , but that has been put under control, 2 1/2 days now running test and they have found nothing they can point a fingure at that this is the problem...can you help?
Ray in NC