Children of Addicted Parents and People

Hello. my name is hannah and i am 14. my mum drinks regulary but the weired thing is when she drinks she doesnt turn nasty she still is nice but with her drinking and also my GCSE'S coming up its making me so stressed out and i don't know what to do any moree i just need some support to help me get throough to her but i lovwe my mum and i dont want to be taken away from her because she isnt doing anything to hurt me phiscally or anything like that i just need cheering up ebcause of my GCSE'S and stuff is gettin of the way because of my mum is constintly on my mind.can someone please help me because i just cannot cope anymore with stress :(