I have n low output urine drinking lots of water daily.i do drink relislim and lemon with water everday. i am late with my period 5days today. please help what can be the problem.

Gaining weight?: Water retention should cause weight gain as water weighs 8 lb/gallon. In a woman with regular periods, some causes of a late period include: pregnancy, excessive weight loss gain, increased exercising, emotional stress, having an illness, traveling, medicines (like birth control pills), hormonal imbalances, etc… Seeing a doctor is a good idea if symptoms are persistent, recurring, or worrisome.