I'm Light Headed Nauseated Have Lowers Back Pain And Feel Like I'm Going To Start My Cycle But Its Earl...what's Going On With Me?

Symptoms that you are mentioning can be due to premenstrual syndrome. This is a condition which occur few days before periods and during periods. Exact cause of this condition is unknown but it is said that high levels of a hormones called progesterone can cause this. This hormone is produced during second half of the menstrual cycle after ovulation. Symptoms of premenstrual syndrome are

1. Bloating
2. Breast tenderness
3. Nausea
4. Lethargy
5. Mood changes
6. Food craving
7. Muscle spasm
8. Feeling of fullness
9. Headaches
10. Cramps
11. Pain during periods

So, in my opinion, your periods are expected within next 7-10 days.