A small number of women do start the menopause in their thirties and as your mother was early it is possible. However, your hormones can start to change a number of years before the actual start of the menopause. This is called the peri-menopause and can last several years. You may notice subtle changes to your monthly cycle, mood and physical well being as time goes on. However, stress can have a huge impact on your hormonal cycle and could also be the cause! The best way forward is to look after yourself well, try to minimise stress, if you can. Taking a good multivitamin and an extra magnesium supplement can help to support this. Try to avoid caffeine, high salt and sugar foods, and processed foods. Eat a good, varied diet and remember to drink plenty of water as dehydration can make symptoms worse.
Acupuncture can be very helpful for this situation so would be worth looking into.