Is It Normal To Have Fluid Before Your Period Why Do I Gain 20 Pounds From Fluid Retention Before My Period?

Why do I gain 20 pounds from fluid retention before my period? - is it normal to have fluid before your period

I earn at least 20 pounds a week before my time, although my appetite is reduced while eating less. I know I have a tendency to swelling, when my hormones change, I usually take Lasix for it. I know from my family that is normal, but it seems a little strange for me. (And, no doctor ever imagined. I only think, I suck.)