Welcome and big congrats on the new weight.
I workout quite a bit, weights, running, yoga, and various other outdoor activities. I have found that I always retain a pound or 2 of water the day after a hard workout. It is due to the small amount of inflammation caused by exhausted muscles, and it is part of the repair and build cycle. So if I want my "real" weight taking a day off - as you did - is best.
And yes, the last 10lb are very possible
. Just takes a little longer than the first 10lbs.