How much are y'all losing weekly?

I am rarely hitting my macros daily, and besides that I'm ALSO not very hungry. I eat 2 small meals a day, and usually just protein. I'm only hitting about half or slightly more of my protein daily(102g/day). My issue is I can't tell if I'm just losing really fast or if my scales are broken. We bought one a few years ago that I've been using (electric)but we bought our house from my Grandmother in law due to her old age and she left some stuff here including a scale of her own. Neither of the scales say the same weight. I have an appointment on the 11th to get some labs done, and I'll find out my actual weight then. I have recalibrated them, and I have them on as even of a surface as I can get them on. I'm just curious because if I'm going by the one I bought I've lost 15lbs in just over 2 weeks, and that doesn't feel right/feels excessive?