erm blue lips?
 

erm ok, so it may be because its been cold round here lately but, my lips have gone blue, not sure how long for, but they actually went blue both inside my mouth and outside, my friend started screaming lol, it happend after my exam on monday and my exam tuesday,

i dunno what happend or if its serious, they returned back to normal and it didnt hurt, but yeah, it was weird........so.........

input please?? xx

I'm not sure why you're having this, but when I'm tired and have low blood volume I get blue lips REALLY easily. It's sort of a sign my body gives me to tell me I'm ill and run down and seriously need to rest. But, perhaps wait for more advice as I'm afraid i dont know anything else to suggest!
May I ask if they feel sensitive to the touch?

yeah a little i couldn't suck them to warm them up or like touch them, they'd go all tingly

Things like low blood volume and lack of oxygen make your lips turn blue. It's something that you definately need to see a GP about. You say it was after an exam, were you having panic attacks around that time (like come out of the exam room and have a panic attck because of the crowds or had a bad exam or whatever)?

no i was suprisingly calm about all three exams, i didnt even notice it had happend and it didnt feel sensitive till my friend said "woah dude what happend to your lips? there blue" lol

As it's not that cold round here now I wouldn't expect them to be going blue. Though, if it was just a one off and you don't feel ill/out of breathe/lethargic/dizzy at the same time then you should be ok. If you don'tel 'normal' at the same time as your lips going blue (or more oftenthan your lips going blue) or if it starts happening a lot then go and see your doctor