I wouldn't worry if I was you. I have yet to have one single symptom and I am 32 weeks 2 days. I didn't even gain any weight until 19 weeks and even then I have gained 6 lbs total. Everything is fine with me and the baby. I felt like you did because I worried that something was wrong, too. Seeing the baby in the ultrasound and hearing her heartbeat reassured me. Now, I feel her move constantly and am loving every minute of it. Good luck :)
You sound like one of the lucky ones! Congrats! I would trade u places in a second!!! Im constantly sick with all day morning sickness and dizziness.
Consider yourself lucky and enjoy it! I had no symptoms with my first pregnancy ( had a girl) this time I have had everything! Find out in 2 weeks what I'm having.