I am 9 weeks pregnant & i barely eat due to nausea. i try to force myself but mostly unable to. can this harm my baby?

Usually the baby won't be affected much because baby will drain out your body's nutrient first. You should ask your OB doc for help with antiemetic medication if problem gets worse.

Unless you were malnourished before you became pregnant, this episode of nausea and lack of food will not harm the baby. Hopefully this will pass in a few days and you will be able to eat, If nausea does not go away in a week or so, it would be prudent to see your doctor to see if an intervention is needed. Try to drink enough water to prevent dehydration. Wish you good health and a healthy baby!