Undecided Question

Stressed over a possible moustache?

okay lately i've been noticing this darkish shadow around my upper lip.. I'm 23, and until now, haven't never noticed this shadow before.. I'm scared that i may have done something/eaten or drank something to make this more noticable. I would never apply bleach to my skin let alone my face, and from the age of 13, i've been waxing my eyebrows (cos i had a mono), and since then i've had to wax/pluck it every fortnight… i'm freaked out that i might have to get my stash waxed/plucked, cos i'm not big on the hairs getting darker & thicker (incase i cant make it to the beauty parlor on time lol)… But people say they cant see it, nobody has ever commented on it or told me i had one.. it never shows in photos or on a movie camera.. i can only notice it in the mirror in some lights… Exactly how noticable does moustache hairs look after you've waxed it (like when it grows back)? and how long does the hairs stay unnoticed? monthly? fortnightly? weekly?? I'm just freaked out is all, cos i don't want to touch it, but i'm so self concious, yet i dont know if i am just seeing things or not… tell me should i just leave it? if so, can anybody give me some encouragement to think of whenever i feel self concious? things like, 'boys find girls with upper lip hair attractive'… obviously that wouldn't be true (maybe), but anything that can help.