I think my teacher noticed my self harm

My teacher for my culinary class has started asking my if I’m okay and how I’m doing, I know that doesn’t sound that extreme but it was just unusual to me because he hasn’t asked this the year prior and has only started recently. I think the reason he’s been asking is because I’ve gone to that class with fresh self harm showing (we wear short sleeve uniforms that’s why) or how me and my friend were joking about how a task we were doing was making us suicidal (I wasn’t joking lmao) that’s the only reasons I can think of. It’s not like I’m bothered by this I just don’t wanna end up talking to guidance again this year.