I have had recent acl reconstruction and meniscus repair. Right now I am experiencing back and chest pain along with sweating. I also am having a hard time breathing as it is painfull. This seems a bit better if I walk around. Just once I spit up mucous with a little bit of blood. My back pain is a bit sharp at the moment. This has happened to me prior the operation, but after the injury and only on the right side. Went to emergency room along with piss test, CT scan and blood work with a diagnosis for muscular skeletal problem at that time. What should I do now?