Hello, my 19 year old son has been vomiting, been dizzy for 2 weeks now. The last 5 days he has been vo,iting qiuet a bit. He saw his doctor last Monday who said (in my son's words) "his abs were swollen". Today he got blood test results back and was told he had a few things come back a bit high, including his liver. He is going to be sent to a Gastro specialist. When I picked him up today, before his conversation with DR office, I thought he looked pale but slightly yellow. How concerned should I be?