A couple things:
Fat Loss is slow. Water weight/bloat comes off quickly. Fat Loss is slow.
Cheese can bloat you. Sweet potato fries could have veggie oil in them (I make my own with coconut oil). Night shades cn also bloat you. (Potato).
I vary about 3-4 lbs over the course of a week. Usually my high weight is friday morning (176 or so) and my low will be 172 or so on Monday morning. I tend to eat more carbs during the week as I do Crossfit M-F and generally have extra fruit, some rice, a potato most days. On the weekends, I tend to eat VLC.
For me, about every month I drop a pound or so, so like back in APril, the swing was more like 178-179 to 174-175.
Bottom line, for me, carbs plus exercise bloats me, but it also helps burn fat and build muscle. I feel really flabby on Monday mornings and pretty tight come Friday.