In one month, including holidays, I gained 5 kg. The doctor put me on …

In one month, including holidays, I gained 5 kg. The doctor put me on a diet for one day and said to come back for a weight check. I suspect that the doctor wants to check if it's just excess fluid... there aren't any swelling or edema, although she says it's pre-eclampsia. Plus, she prescribed daily blood pressure measurement. I read online that some people were also put on a one-day diet. What did they then prescribe you? A diet? I don't even understand where this weight is sitting... my arms and legs are the same as before, the belly didn't significantly increase in size over a month... only my breasts have slightly increased.