I started having symptoms before I even knew I was pregnant.. I took a test at 6 weeks & was instantly nauseous that NIGHT!!! lol
but, 2 weeks before then was when I had the super, super, super sore boobs, nipples, and they itcheddddd so bad - so technically I was 4 weeks pregnant when my symptoms started.
I'd say you MAY have gotten lucky & surpassed some of them, but I've seen where some mommies didn't get any symptoms until week 10, 11, etc.