Help I scratched myself and now my parents might think I cut

So my knee really itched, so I scratched it with a little wire and now there's like marks on it that look like attempted cuts to me. I'm going to wear pants tomorrow but it's really noticeable and I don't want my parents to think I cut. What I want to do is just wear pants until it goes away but I don't know if it will. Help! What do I do if my parents think I cut my leg Or ask what happened? They're very strict so I'm just gonna play it off like I scratched my knee a lot and not say anything about the wire... What do I do?! Please help