Clearly, if your bf wanted you to stay at the hospital with him, he should have said so. You should not be expected to know that he really wanted you to be at hospital after he texted "don't come." He should have just communicated his wishes directly.

That said, since he is the one in the hospital going through this right now-- even if some of his demands or emotions are irrational-- this is your time to be there for him and allow him to be upset/frustrated/scared/cranky. This is the time when he gets to be the "patient" and he gets to have your full support. He may be acting "pissy," but when your SO is in the hospital they sort of get to be pissy for a few days. It's not easy, but he probably just really needs some unconditional love and support. He's probably scared. Since he's vulnerable right now, this really isn't the time to put your anxiety or your "stuff" onto him. Its not the right time to talk to him about understanding your MI. You absolutely DO have the right to bring these things up to him later, after he is out of the hospital! Of course, those things do matter-- but they should be tucked away temporarily, while he is recovering. You not working may have also put extra stress and anxiety on him, and his way of dealing with it may have been to internalize it and this may have exacerbated his condition. That may be why it is coming out as anger right now now. He also probably doesn't understand your MI. It may not be that he is unempathetic; just that he doesn't "get it." If you can't work, apply for SSDI so that you can still have an income and take some of that stress off of him. It may be that he just has too much pressure on him right now, and he can't keep all the balls in the air right now. Just because he doesn't have an anxiety "disorder" doesn't mean he isn't stressed to his breaking point. (Been there, done that!) Once he is better, these are all good conversations to have so that you can understand one another better and, hopefully, work through the issues. Just try to put on your best empathy face for a few days, while he's in the hospital, and not really strong enough to take care of himself, let alone anyone else. Sometimes, being the partner of someone with MI is really stressful and difficult, and the partners need their own mental health days, too. When it's so often about the stress and anxiety of the MI partner, the other partner's own stress can get kind of overlooked. Maybe you just both need to talk it out and see how you can make a better team.