Advice for a lost woman

My bf who I’ve been on and off with for a while now the littlest things gets him upset and when he gets upset he just goes silent or leave and don’t be trying to communicate to me why he’s upset at the moment sometimes I’m confuse how I hurt his feelings. A few days ago we were off and a few days after me and my mom got into a really bad argument which lead to me overdosing on medication because I couldn’t handle all the stress. That same day he reached out to me saying I shouldn’t contact him anymore and that he’s changing his number. We weren’t talking for a few days prior because of something minor we could’ve fix but we didn’t. I had to go to the ER because of my poor decision, I reached out to him letting him know that I’m in the hospital but didn’t explain the reason because we weren’t on talking terms but I wanted to let him know just in case he try reaching out to me again ig. At the hospital my phone had got taken away so I wasn’t able to contact him again or even saw if he had contacted me. After I got out I saw that he texted me on Snapchat so I called and texted him on his phone but the message wasn’t going through. I figured he changed his number like he said he would. I texted him on Snapchat and he was curious as to why I was at the hospital the topic was very sensitive to me at the moment so I asked him to give me some time to speak about it when I’m ready. But he kept trying to force the information out of me and I ended up telling him why I ended up at the hospital. After I told him, I felt like I shouldn’t have told him because I’m just scared of being judged and looked at crazy for even making such a bad decision in the first place and he doesn’t seem to care about me much but pretends to. I also felt very vulnerable. Since I came out of the hospital this guy didn’t gave me his new phone number but told me he care for me. I can only reach out to him on Snapchat only I don’t have his phone number because he didn’t give it to me, Also when I asked him about it he said he’s texting me on Snapchat so he don’t see the problem etc. Today he texted me on snap saying he’s bored and I told him he could play his video games, because he do like playing his video games. He seem to took offense to that and just told me goodnight.