Light red haze around gums *dentists please?

i have this light red haze around my teeth like my gum line. its a thinker line as where i've seen pics of gingivitis and it doesn't appear to look like blood. my teeth do not bleed when i touch them, floss, or brush. what could it be or is it normal. you can't really tell until i take a flash light and look at it. i get regular dental check ups.