Hi, I m 36 years old and for the past 8-12 months I have been experiencing scant bleeding volume during my periods. First 2-3 days brown spotting the 1-2 days with some red blood followed by 1-2 days of brown spotting again. First menses at age 14, cycles every 27-29 days, used to be at least 4 days of normal bleeding. I visited the GYN. She ordered FSH, prolactin, TSH , Vit D, CMP, CBC and Ultrasound. Should I have other tests ordered, like estrogen, progesterone? If so, is there a recommended time during the menstrual cycle to do so? Thanks