Not too long ago, my boyfriend brought up him not feeling well. I took it as a sign of him working out too much, and told him to slow it down. The last time I was with him, he pulled away from me and was breathing extremely shallow, shaking, was hot, and was holding his chest and sides in pain. The pain wasn’t as bad after a few minutes, but was still there enough for him to hold his side. He told me that it has been happening for two weeks and is happening more often, and sometimes passes out due to pain The chest pains make it hard to breathe due to feeling as if he is being ‘punched in the chest’. I’ve asked him to go to the doctor, but he refuses. I cannot seem to figure out what is wrong, and I’m extremely worried. What could possibly be wrong, and is it serious?