Weigh four pounds heavier in 3 days. breasts feel watery. is weight gain due to peeiod starting tomorrow. never put this much weight on before?

Unclear: The cause of this is unclear. If you think you are pregnant take a home test. If the weight is due to your cycle it should resolve when your period starts. If not then you should schedule a visit with a primary care doctor.

It is easy for: Weight to fluctuate this much without any medical issues. But, retention of fluid associated with period is very common. It will normally diurese after your period starts.