I go to the toilet vary rarely for a number , is there a reason as to why this is? i go maybe once every 2 weeks or so

Multiple reasons: You are female. You have bowel movements rarely. You take birth control pills. Chronic constipation may occur in people who are sedentary who use chronic narcotics who have colonic inertia. If you are walking and exercising enough then next look at your diet. Are you getting enough calories and fiber. If you continue to have problems you'll need to see your doctor. Be well.