I really need help i dont know what to do im going to die?

I cant breathe and i couldnt the day before yesterday the hole night but richard was there and he made me breathe again but yesterday it was till happening and then i started texting him and it was better and i fell asleep but now its still happening and he cant be with me tonight but yesterday was worse than hell for me i wanna die but i just dont wanna leave him alone but i dont want him to tell anyone and i wont tell anyone i jsut cant do this anymore im going to die if hes not here tonight which he wont. i dont know whay to do anymore i keep hyperventilating and then not breathing and then i start twitching and then i think about him that makes me breathe again but it doesnt work that good anymore im getting closer to not waking up someone help me