Aww... Congrats!! I'm currently 14 weeks and I have lost about 4lbs. My doctor told me that perfectly fine because I won't gain my weight until the second half of the pregnancy. I'm not sure if that's the same thing for you but you should check with your doctor.
I was sick at the beginning and lost a couple pounds, but gained then back. I'm 19 weeks now and I've only gained 1-2 pounds, but me and my baby girl are healthy! If your dr notices you're not gaining weight, he/she will just have you eat more things like protein shakes. But you're so early still, there shouldn't be a problem!
Thank you so much ladies congratulations to both of you too! I guess i just worry a little too much sometimes.