Worried about NST

Katie • FTM•Tyson born 2.9.18💙•Student 📚• wife 👩

I'm 35 weeks tomorrow. I have GD and have been having twice weekly NSTs for a couple weeks now. Baby always seems to be asleep during it and they have a heck of a time getting the 2 accelerations. The Dr has actually had to come in because the nurse couldn't get them. I'm starting to feel worried about it. Anyone else have similar experiences?