Everything comes crashing down at the same time.

So all of this started back in January, where my then-boyfriend claimed that he weren't happy in our relationship.
I then later got confirmed that he's been cheating on me through out our whole relationship (which, to be honest, I already kind of knew). We broke up in february and a bunch of relationship drama happened after that, it's not really something that I want to get much in to, just usual.
At the same time I was having trouble with school too and was almost thrown out because of a misunderstanding, which continued through out all of February. I thankfully got sorted out, but my school is watching my every move now, which is quite nerve wrecking.

Forward to March, my dad is visiting my brother, my mom and I (since we live in two different countries and I don't really get to see him often). He got his leg amputated about 10 years ago because of a blood cot, and came here to get a procedure to help with his pain. That didn't work out, so the rest two weeks was quite depressing for all of us.

Now April...
One of my close friends passed away April 2nd due to a bad heart mixed with alcohol and drugs. This caused me to slag back a lot in school, so all of this stress is juts building up inside of me.
A few days after my friend's death, my mom gets diagnosed with a depression and bipolar disorder, which honestly isn't fun to be around at all.
April 21st another friend of mine dies by being choked from his own vomit while he slept...
So now, all of my friends and I are scared for if somebody else in out friend group will and who'll be the next.

All of this has caused my stress and anxiety to increase massively.. my exams is coming up soon too and I just feel like I can't handle all of this at the same time.
All am doing at the moment is just slagging, ditching school and sleeping.

If anybody could help with some advice, it would really mean a lot to me.
Thank you.