vagina pain when peeing, laying down and walking?

ok so this has been going for 3 days now. whenever i pee my vagina stings like you're pouring lemon juice on a cut and today it's starting to hurt when i walk and when i lay down. so does anybody know what to do. i can't go to see a doctor because of stuff that's happening at home. or does anybody know what's happening?? please help, it's painful. oh also i looked at my vagina and it looks fine, the same as it did before. i had my period 1 1/2 weeks ago so it's not time yet.