Is early period a sign of pregnancy?
No. Lack of a period is a sign of pregnancy.
Since I started on the 13th it hasn't been normal at all... It started spotting, light, a lot and then back to spotting. I'm not sure what's going on?
This doesn't sound like a period. It sounds like spotting. Many women bleed during pregnancy and mistake it for a period, when it's not. But, this could just be an off month, and an off period. No way to diagnose, just guess.
Wait until your period would normally be due. If your period doesn't come, test two weeks later using first morning urine. A test taken right now would likely give you a false reading, as it's too soon to test.
Good luck.