I harmed again. For a stupid reason.

After spending a nice day with my boyfriend, I came home to get a text that his mom caught me kissing him and stuff on his neck, but she turned around and left the room and I never even knew she was there. He explained to me what she said and how she said she "doesnt know who I am anymore", she "isn't very happy with me" and how I'm "not the innocent girl she once knew" like ofc I'm not! No body is a saint! I took her words too seriously and started stressing out, I was tearing up and pacing around my room trying to calm myself. In hindsight, I really shouldn't have taken her words to heart. Im here for my boyfriend, not for his mom. She could dispise me and I wouldn't care. But in that moment, everything was rushing and I didn't know what to do. It happened after he told me that she said she was going to kick me out of the house after she saw that. She threatened to kick me out! After that he told me that he never should've invited me over. I was in a panic now. I told him that I needed to go breathe for a second and stopped talking to him. I was pacing, crying, everything for a while. Now, I did hurt myself a few months ago because I was stressing from family issues but I stopped. I suddenly had this urge, just to do something and I didn't want to but once I did, the burning ice sensation felt so good and I was more focused on the pain then what just happened. I feel like fucking shit now because I have this deep scab on my wrist and I don't know what I'm going to do. I've been wearing elastics to hide it but soon someone in my family is going to ask something and I'm just, im not ok. I haven't told anyone yet, I don't think I want to. I think I overreacted but I really just needed a distraction and I hate that I chose that out of all things