20 week appointment and nighttime update

I had my check-up yesterday with Dr Esumuede yesterday and baby boy Williams is doing good! I gained 3 lbs (4 total) and his heartbeat was in the 140's. My next appointment won't be till the first week of November.
On to Addisyn and bedtime - things haven't gone as smoothly as I would of liked. I guess you can't expect every transition to be flawless! We've had a very rough few days/nights, but we can now say she is going to sleep in her room for nap and bedtime by herself again, but is still waking throughout the night and coming to our room. So tonight we decided to gate her in her room. I can only imagine the screaming I will hear when she realizes she's stuck there! For some reason she prefers sleeping on the floor of her room - hey, whatever makes her happy! Isn't is crazy though how last week I had a child who went to sleep by herself without crying, and stayed asleep till 8 in the morning, and now I have a child who cries when you mention night-night, and won't sleep through the night? All because of a rail missing off the front of her bed??!!
Addisyn must have sensed my frustration I've had over the past few days, because she was a total angel today. Not one tantrum, no screaming, and other than a minute of crying, she's gone right to sleep for nap and bedtime. Thank goodness for today or I probably would of had a major breakdown!! So now I have just a glimmer of hope that we'll be ok when this baby boy arrives!!!