I’ve just started harming myself and Im scared I might fall into addiction

Hello! I’m very new to this community because I didn’t know it existed until now. Using an alt account for obv reasons because I’m a little scared rn

So lately I’ve been in a lot of stress lately due to school and I saw a box cutter and I let my intrusive thoughts win, turns out the blade was sharper than expected and I instantly saw blood. I kept hissing in pain and panicked a little so I covered it with bandaids after I showered.

After that incident, I kept getting thoughts to cut myself again, I tried not to do it but I ended up covering my stomach in lots of sharp small cuts that were dropping some blood, not enough to cause any scarring but it really stung. Day passes, I get the urge to cut myself again and I do it on my thigh, it’s a little deeper this time.

I’m really scared to fall into an addiction, i see videos of people slicing themselves with the same tool I used and they go to the point I can see their muscles. I don’t want to accidentally go down a slippery slope and end up in the hospital if I end up developing an addiction, or worse, bleeding to death.

I’m very sorry if I’m talking too much, I’m just a bit panicky right now, I don’t know what to do.

EDIT: The advice was very helpful!! I’ve thrown away my box cutter into the trash and I’ve muted every single mention of self harm on my social media accounts. I’m so thankful you guys decided to help me, thank you!!