I'm 24week pregnant and only gain 2kg. Is it normal? + i was diagnose with low placenta. 🥲

i technically haven’t gained back the weight that i lost during first trimester and now i’m back to vomiting again. at wk 28, baby weighing 1.2kg and low placenta. but gynae didn’t say anything. he mentioned that there’s nth to worry about the placenta, it will move up.