I am 36 years old. my cycle started one day late and was lasted the usual five days. however, two days later i was spotting again with bad pain that travel from my back to my lower abdominal. by the second day it was brown in color and seemed to be going

Irregularities: It's not totally abnormal for women to have some irregularities in their cycles from now and then which it sounds like you are experiencing although I can't read your entire question.The extra spotting can happen and be accompanied by the common menstrual pains.The brown color is just older blood and is nothing to worry about.I wish I could be more help I just can't read the rest of your question