Have i started the menopause ?

this is second month this has happened i was late by a few days on my cycle last month, and now i am 2 weeks late this month, i am 42, i have all the symptons of pregnancy, ie sore , sickness, right bad backache, but i am not pregnant done 4 tests, same as last month, cant get to see doc til next week, but its getting frustrating, cos im thinking have i started the menopause ?? cos of my age, i just wondering if anyone has any ideas or answers that might help..