I also agree w/ the two previous posters, you seriously need to ask at your service for a stress debriefing, and/ or if there is someone you respect (your partner maybe) in the field, maybe talk to them about it.
You will burn out long before your time if you take your "calls home w/ you". During the call do your best to make a difference, sometimes that is saving a life, sometimes it is making the pt more comfortable, sometimes it is providing a hearing ear for your pt, sometimes it is providing emotional support (at the time of the call) for the family, sometimes there is nothing you can do for the pt at all. Once your shift is over you need to leave the emotional baggage of that shift at work, everyone has different ways of doing this, you need to learn what works for you. Pedi calls are the worst that's for sure.
I personally have never attended a funeral of a pt, can't think of anything that would make me want to do that in the future, but I believe in never say never. After especially stressfull shifts I go out by myself and take pics of beauty and nature, this works for me, not saying that will work for you but you do need to find something like that, that has NOTHING to do w/ fire or ems, but that helps you to de stress.
I wish you the best, it will get better.