Can I loose weight drinking lots of water?

I eat fiber and multi grains fruits salads chicken grilled I eat 1200 too 1400 max a day I drink like 8 liters a water a day is that good too loose weight more water I can not exercise only walk had surgery on leg that's why can nit run I walked like a mile yesterday slowly but walked.. I can not walk that much everyday but i try little by little ... I have gym membership I jog in pool... Or walk in pool... I eat no fast food I take laxative teas everyday organic still can not loose much weight if I have irregular period does that have too do with it at all...