I feel like I’m losing my mind right now

Someone I grew up with since elementary school just committed suicide on Friday. I cried for him, for his family and for his friends. We rode the same bus all the way up till high school graduation. He was three days older than me. He has a baby girl that is 7 months. He was a RN. I called my mom crying because I was upset. That was the wrong thing to do- my mom was mad that I was crying for someone like that. Saying we didn’t hang out all the time or we weren’t close. That what he did was stupid. And it was making her mad that I cried for him. Well we hung up the phone and I called my sister to vent... that didn’t end up right either. It pretty much didn’t go well and ended up with us not wanting to talk anymore and hanging up too. So now I feel like literal shit. Misunderstood from my sister, feeling dumb now. I literally don’t want to talk to anyone, don’t want to do anything. Wtf