Like chantal said it is completly normal!! I am due October 11 and I have lost 2 lbs--unlike both of you I do not vomit up food but I am so nauseated that I just can't eat!! When I do eat its not very much!! Like she said you need to get pleanty of fluid and take your prenatal vitamins!! Congrats and good luck!!
Congrats! I am due Oct. 9th (as of now, i will have an u/s on the 25th to confirm)
To answer your question, yes, very normal! I have terrible all day sickness, and vomit every morning and some nights, and have lost 5 pounds so far. As long as you are getting enough fluids and eating what you can, you will be ok. The 2nd trimester is full of hope!! lol. =) We are almost there.