Sex 10 weeks ago used plan b. I've had nausea for over a month & I just got very bloated/full all the time. Neg. Urine & blood test & just had period.?

Altered cycles. Taking the Plan B threw your normal cycles off. It's common, and in fact, that's how it is supposed to work. Your body is likely just trying to get back into a normal cyclic pattern. Wait a few months and if it's not improved, see your doctor.