Is it possible that Drs can get your due date wrong? I feel so big with my son. I'll be 27 weeks tomorrow, I don't know how I'll go another 13!!😮

I swear it gets bigger everyday, but I'll be 39 weeks Friday ❤
What do I do if I keep throwing up everything I eat? I'll eat and an hour or so later I'll feel sick and I'll throw up everything.
Science!
My friend posted this on facebook last night and said her kids were asleep within minutes. It's a song that scientists created to help people fall asleep. I was skeptical but I thought what the hay, I'll try it out. I didn't bank on Dh falling asleep, but both him and lo were asleep by minute 2. And lo slept six straight hours. ?
I'm 37 weeks and Alex is measuring 40 weeks plus! they think they got date wrong...but ultrasound Thursday will show us what's going on.