I feel like i have nobody to talk to

I feel like my mental health is becoming a burden on those around me. I live with my boyfriend, and at first i was talking to him about my feelings and stuff and he was supportive. But last week he got really upset and started crying because he couldn’t help me and since then, i’ve been holding it all back. And when i do talk about it, it feels like he just doesn’t understand at all.

I don’t have many friends to talk to. I have family, but they all have big problems and i don’t want to make anyone worried about me.

That being said, i’m being tormented but some really intrusive thoughts and i’m scared that i might act on them. I’m scared if i tell someone, that it will affect their mental health. I don’t want to make my boyfriend and my family anxious and depressed because of me. I also don’t want them to think i’m a crazy person and i’m going to hurt myself. Also, i feel like if i tell them what i’m thinking that maybe they’ll stop me from doing it. i don’t have plans to end my life, but i do have thoughts of hurting myself; breaking my own arm, hitting my head against a wall etc

Really don’t know what to do at this point. I’m sad. I’m scared. I feel misunderstood. I’m so lost right now.