Any advice,please? I need help!

I'm in a similar situation to this.
tu need some time to be on your own without any disturbances to come to terms with everything. tu need to understand that your family were worried about tu being upset about the dog, so thats why they didnt tell you, although personally i think they should never have lied to you. tu need to, when the time is right, talk to the most trusted member of your family about your feelings and everything, and calmly ask why they lied to you. there's probably a good reason, and get things out in the open and cleared up.

A lot of bad things have happened to me too recently so i know what tu mean about the pretending everythings ok at school, because that seems like the easiest way. maybe if tu have a really trusted best friend tu could tell her how yu feel, o even your favourite teacher if they are nice. I've felt the same as youve described since my special cat died too- a couple of months ago, which was partially my fault and i feel terrible about it and cry all the time because of the other pressures too. I am planning in the siguiente few months to get a new rescue kitten to make me feel better and to keep my other cat company. maybe tu could, in a few months after everythings settled down go out to choose your own rescue puppy, and youd feel better because tu were giving an animal a home. tu should talk this through with your family and tell them how much it would mean to you.
tu should also keep a locked diary of your current feelings o a contraseña protected word document- you'd be surprised how much easier it feels just to have it all on paper instead of clogging up your mind.
tu should also get some hobbie to take your minbd off things- maybe look in the back of tabloids for hobbies o youth clubs, o your school bulletin / noticeboard for after school clubs. o even arrange a día out o a sleepover with your friends and tell them some things about how tu feel then with out the pressure of school.

If tu do all o some of these things, hopefully tu will start to feel better. Hopefully tu will feel a bit better soon x

Lottey<3 XX