Why does no one seemed to care

I had a very bad mental breakdown yesterday night and I didn't told anyone about that. I've been on verge of just giving up on myself and I was in such darkness. I was very vulnerable. Never have I ever been in that situation. After that since that day, my mom has been behaving bad with me, like it's all my fault. It's like I couldn't even cry for being brutally sad about myself, I couldn't let it out. It's like that. I feel that everyone has just been keeping up with me. I can see how they're behaving. I regret being vulnerable in front of them. I couldn't hold on. What should I do? Even my bf acted like it's my mistake that I didn't replied him all along, when in reality I was just not fine. Even after telling him how terrible it was for me that night, he didn't seemed to care at all. Like just nothing. Like whatever I said went ignored. I hate that I told anyone about this. I feel like an idiot now. Why did i even open up to people whom I thought were trustable. It would've been better if I ended up dead rather than telling anyone about it. All I wished was just a little empathy. Caring is their choice. But none did anything. Just brushed me off the other moment and let alone even give me some time or ask me how I am. I don't treat anyone like that, I don't expect myself to be treated like that too. I've spent times encouraging and giving them all the comfort they wished for. I didn't compromised on that part ever, be it anyone. So why are they being like this. I shouldn't expect in first place. But if I shouldn't expect them from them, then from whom should I expect? How should I be courageous to handle my broken pieces. I've lost trust from everyone now.