Low energy and constantly tired: My fatigue diary (from my youth to my 40s)

The best way to get to the root of what makes you tired is to keep a fatigue diary.

Is it a headache or is it a migraine?

It is not always obvious what sets off migraines, and once a GP has established that you are suffering from the condition, you should keep a detailed diary of the time of month, and of your environment

Migraine – Discover Your Personal Triggers

Certain foods are commonly associated with migraine, though what causes migraine in one person may not cause it in another.