I went in for my second nst today and it was going well until I had a big contraction that caused a deceleration.  They kept me for another 40 minutes in which they observed more contractions, so I had a cervix check.  It is still closed but it is beginning to soften. I am 33 weeks.
I didn't realize I was having contractions!  Stupid me thought the baby was rolling to the other side causing some tightness.  They sent me to L&D where I was monitored for quite some time.  I was contracting every 7 minutes but because my fetal Fibronectin test came back negative they let me go home.  Other than the one decel, LO is doing well.  Unfortunately, I am currently experiencing that tightening again lasting a minute or less, about every 8 minutes.  Twice more and I'll probably go back to L & D.  I see others are having some scares, good thoughts to you all. 
Update:  Things slowed down yesterday so I didn't go in.  I am on modified bedrest now so hopefully that helps.  Thanks for all the support, ladies.
                 
                
Re: Well, that escalated quickly
Me: 31 | DH: 33
DS1: 12.23.13 | DS2: 05.06.16
BFP: 06.30.19 | EDD: 3.9.20
TTC3: 11.18
BFP: 02.05.19
CP: 03.07.19
*really traumatic recovery*