Most young girls experience some forms of pains while
menstruating. These include back pain, lower abdominal
pains, and others. Periods can be uncomfortable, and at
times, drain bodies of energy.
Eating healthy and drinking fluids is the secrets to easing
these pains and here are some foods and fluids to avoid:
1:Dairy:
Avoid obtaining calcium from dairy products. Dairy foods
like milk and cheeses can actually trigger cramps.

See more @ http://www.dannysblog.com.ng/2016/11/food-that-trigger-menstrual-cramps-in.html?m=1

Excess carbohydrates and sugar can also cause it