Is this possible? Isn't it the hormone that makes you feel nauseous, tired, etc.? So, if there isn't enough hormone in your body yet for the test to pick up on, then there can't be enough hormone in your body yet to cause symptoms, right? can anyone clear this up?

Yes, it's possible. I thought that sounded nuts until it happened to me. I started feeling pregnant almost right away. I was tired and felt like I had horrible PMS. No nausea, though. It was a couple weeks after that started before I got a positive test.

Yeah, most people really don't feel anything until about 8 weeks, and then they get tired/sick. before then those symptoms can easily be confused with period symptoms.

well at 3 weeks pregnant i was urinating alot, tender breast, and mood swings. i found out a day 2 days before my period was due.

I say yes!!!! I always just KNEW I was pregnant, before I even missed one period! I would feel faint. I would know right away.