Loss of appetite

R

Hi mommas I’m 21 weeks pregnant and I lost my appetite for food. The doctor prescribed to take medication since the baby is measuring a little bit small but no concerns. He told me to eat eat a lot of protein and have a spoonful of peanut butter and a glass of milk before bed, which I have been doing. Is there any protein drinks that is safe for pregnancy that you guys recommend so the baby gets all the nutrients and protein that he needs.