I have always had really bad menstrual periods... always. Severe pain in my stomach and always sharp pains going down the legs, cant walk up stairs cause of weakness in legs, stomach is 4x larger clear up to my ribs. couldn't fit into my pants if i wanted to. Normally i wear a size 3/4 in pants, i would say i am a size 8/9 right now.... I sometimes throw up, i faintness, always sick, hurts to eat cause of the pressure and fullness the food causes. I get charlie horses in my legs. Then i have all the normal signs of a period to. My periods have always been on time permitted i am over 120 lbs. I am 41 years old, have 3 kids, nothing has ever changed my whole life. tell me why? Do i have some sort of allergic reaction to my periods?