Is it actually possible to have a weight swing of 7-8 lbs during your TOM?

I know I felt bloated and drank a ton of water, but can your weight really swing that drastically in 5-6 days?

I'm actually new to weighing myself and I read to weigh yourself every day then average it out, or to just weigh yourself once a week.

Which is a better technique for women?

Thanks in advance all!