Don't get down on yourself- everyone has different symptoms and the first few weeks can be really rough. Most people start to feel better in the second trimester and get some energy back, and that's when the excitement seems to kick in for a lot of people. It's also when you get to do a lot of the "fun" stuff- if you want to find out the baby's sex, start registering, picking names and nursery stuff, etc.
Hang in there mama!