I'm scared

It's going to get colder soon, and I'm going to wear longer sleeves. And they will cover my arms and wrists. I'm really scared I'm going to relapse (not really a long clean period, its been a week). I'm also scared my parents and friends are going to find out. My mom has been suspicious about the bandaid that never seems to leave my forearm (I have been cutting for about 1-2 months. I hide my two scars/wounds under one bandaid and tend to cut over them if I feel the need to cut. I said it was a dog scratch first. Now I'm saying I got scratched by a bunch of shrubs. I was changing out my bandaid at marching band camp and my friend accidentally saw them and I said I accidentally cut myself while cutting fruit. The others seem to be getting worried too and started asking me why I had a bandaid on my arm. I've been covering it up with bracelets but I forgot to put them back on after I got off my flight. Any help for how to stop relapsing and hiding them, and any excuses for my cuts? It wont help that my wound is still healing and one is deep styro(cut over multiple times after being healed and while healing) and a newer one which was baby beans.