Help with my self-harm issue?

I used to self-harm, but it was just with my finger nails and I would dig them in really deep and scratch my skin. My mom eventually took me to the doctor & he knows about it. But the other day i used a pair of scissors instead of my nails. i know i shouldnt have done it, and i'm not proud of my self harming. my mum is really angry at me now and its making me more upset. she threatened to take me to a psychiatric hospital but i dont want to go. she booked an appointment for me to see my doctor again and i dont mind talking to him about it. i'm worried that when i go there my cut will have healed a lot and he might think my mum's making a fuss about nothing because when i hurt myself i didnt even do it very deep.. what do i do? i saw him a few days ago before all this, and now he's going to think i'm weird. he's already suggested that i see a counsellor but i can't until the week after next week.