I get headaches about twice a week, migraines every few weeks. Dizzy spells, tremor, fatigue (can easily sleep 12hrs each night). Should I be worried?

Don't worry, be seen. It sounds as if you're having a changing pattern of headaches. This can happen with various types of headache, but if you're feeling dizzy and shaky, as well as fatigue, you should see your doctor for evaluation of other causes of your symptoms, including exploration of why your headaches are escalating and how best to treat them. Don't worry, but don't put off seeing your doctor.