Constantly choking

Sharee

I'm a FTM and this is freaking me OUT. My son is 5weeks and he never has spit up or vomit. But recently he has been choking and his milk has been coming out of his nose. I saw my doctor today and she said it was just reflux nothing to worry about. But it keeps happening and he literally cant breath to the point that his entire face is red, and I'm doing chest compressions ready to perform CPR. Has anyone else experienced this? What should I do? Am I doing something wrong? Should I get a second doctors opinion? #sendhelp