I typically weigh the most about 2 weeks before and then kinda hold onto that for a bit, with it
sloooowly coming off. Whooshes were I lose weight usually come after my period but oddly, my lowest weight day is almost always the day I start my period. I have no idea why, and I've always wondered because I know that is not the norm.
Also, I tend to weigh the most when I feel the thinnest and I conversely I weigh less on days where I feel a tad pudgier. I'm also odd in that my morning weight tends to run the highest and it's my afternoon weight (around 1pm) that is typically lower.
I am in tune with my body as far as knowing what day I'm gonna start my period without checking the calender, and I'm regular as clockwork, usually even starting at the same time of day.
Also I never have small fluctuations like 1/2 pound. The scale changes a minimum of a full pound either way each time. Yesterday, for example, I weighed 148.5. I exercised and was below 1400 calories yesterday (with no salty foods) and today I'm up to 150.5 again for no obvious reason.
Whatcha gonna do?