Hello and welcome to HCM
What is your age?
The symptoms that you have mentioned- backache, headache, nausea,discomfort in breast appear to a part of premenstrual syndrome
Cramps during menstruation
are due to dysmenorrhoea. Dysmenorrhoea is the discomfort during menstruation. You can take Mefenemic acid- pain killer for this pain.
Regarding your complaint of shortening periods, it is important to know your age. Are you approaching manopause.
As one approaches menopause
there are menstrual irregularities like lighter cycles ans shortening cycles.
You have also mentioned that you feel more hungry and more tired.
You should get a fasting blood test
to rule our diabetes
Consult your gynaecologist for complete examination.
Thanks and take care
Dr Shailja P Wahal