I've gained around 12-14 pounds in about 6 weeks, and my pants aren't any tighter. In fact, the amount I can pinch on my belly feels smaller. If the OP is like me, then maybe it's complete newbie gains combined with more food being in the system at any given time?
And I always weigh myself first thing in the morning and last thing at night. I track them both in a spreadsheet so I can do averages, trends, charts etc. It's really motivating to a left-brained, numbers and logic personality. I haven't had much luck with the electrical scales. To me it's easier to just go off the mirror, or find a bodypod or trained caliper user.
Also, if you post your height and weight, experience, and diet (with macros, if you track them) it would make it easier to see what, if anything, needs adjusting.