Erin, weight can fluctuate about 5 or so lbs with your clothes, yes!
The time of day you weigh will also make a difference on your weight.
Good for you for losing the weight, if that was your intention!
As for how much weight one has lost - I went from 192 to 145 in just under 6 months.
I am now at 135. The original weight loss was on purpose, the last 10 has not been. Antibiotics will do that! LOL!