I don't get much for symptoms (or at least, virtually none with my son, now 5yo). Boobs are a little tender, mostly in the evening, and I'm tired - but I'm also just getting over a cold so that could be contributing to the tired! Other than that, nothing out of the ordinary.
My last pregnancy had no symptoms at all, didn't even realize I was pg till 6 weeks...! I was actually packing for a camping trip, grabbed a box of tampons, looked at it, did some math in my head..... and drove straight to the pharmacy to buy a test. No camping coffee (with Bailey's) for me that trip...!!