Re: how early did you have symptoms?
The things that we think could be preg. symptoms can also be period symptoms, which is one of the jokes Mother Nature likes to play on us. You may be able to look back and realize that it was a symptom of pregnancy, but at this point you probably aren't experiencing anything that different from you are waiting for your period.
Heightened sense of smell and sore boobs are possible symptoms of pregnancy, though.