Baby measuring small at 33 weeks.

I am very concerned that my baby is measuring small at 33 wks she is only 1.6 kg and has plateaued her growth since a month. My doctor has scheduled a whole lot of blood tests and NSTs for next two weeks. But if no improvement they will take her early which makes me worried 😟 I don’t want to see her in NICU having oxygen and whole lot of attachments for weeks. Please share your experience if anyone has gone through this and has photos how their baby looked when born with this weight. This is my second and never had this issue with my 1st.