PMS weight gain.

Hi all!
I have been on here for about nearly 6 weeks. I have been following it by the book and havent gone over on my calories at all this week, but i have gained one pound in weight. I didnt know if it was water retention as i am due to start my period on saturday. Has anyone else had this happen? Im getting upset about it to be honest!! I just want to know if its normal when you are PMSing!
Debs x:smile: