What do you think I should do?

you are stressed out and you should talk to a therapist or guidance councilor about this. you do have things to be sad about and that is why you should deal with them with someone who can help you. it is really good that you are involved with a lot of things that's really great because you will find a pion and something that will make you happy even when you are home. Things will get better trust me time will fix most of your problems but for now get someone to talk to that can help......best of luck