I am 43 years old. I did not have a period for 3 months, at the time of the month I should of received it I would get dizzy and weak. On the 3rd month it was so bad I could barley hold myself up. I started my period the next day it has been on for 5 days and as each day passes I get a little bit stronger and able to do more. Could this be a side effect of menopause for me? I have a lot of menopause symptoms: hot flashes, night sweats, irregular periods, insomnia, loss of concentration.