Low risk to high risk within 1day

NJ • 30 yo, 1st time pregnant
32 w. I don't have any medical issues at all. Just come in for regular checkup. My doc sent me for a NST just to have a baseline. He said everything looks fine until he noticed some contractions. I did not feel a thing. They kept me overnight and monitored me. Transvagnial ultrasound suggests that I have short cervix. So high risk now! Ugh. I am put on 2 w bed rest and will get two doses of steroids to fasten lung maturity. Hopefully my baby boy can stay in the oven longer!