So Congested He Threw Up

My son woke up from his nap very quickly. He slept for only 30 minutes, when normally he sleeps for at least two hours. He was crying and coughing like he was choking. So I immediately went to his room to see what's going on. I picked him up and then he threw up on me, he was choking from his own phlegm. He's got cold since Saturday and he's not a big fan of the nasal aspirator, so he is very congested. He doesn't want me to touch his nose at all, so he's suffering. Anyway, after he threw up he felt really better. I'm teaching him how to blow his nose but I guess it will take a while.