His side effects are to expected. I threw up a lot post Tx - actually polished my teeth with stomach acid. In a few weeks the thick mucous should get better. Like Amy said though at his age you can't afford to let things away from you. Make sure that he stays hydrated -2-3 liters of water a day. If he throws up he will have to replace those fluids. The chemo makes it worse so I would hazard that he will make a faster recovery since he didn't have it. I had access to an oncology advice nurse and she had a hot line to my oncologist who was my PCP for about 6 months.