Hi Ellie. Know 44 is young to start menopause, but I started at 42 (yea!! bring it on!!). No history in my family either. You could be right re the vitamins, but a simple blood test will prove it once and for all. No need to put up with hot flushes (thats what we call them in Australia). This is only my opinion, but, if it is menopause, the earlier you start on corrective hormone therapy, the better for you & your heart!
Cheers...Pam