Hi doctor, I am 36 year old and started observing spotting after my ovulation from cd16 onwards in most months. Sometimes it brown, red or pink. I was also getting tender breast and nipples during this time. My doctor did an ultrasound on 4th day of my cycle. I have attached the report for your reference. She thinks it is due to low progesterone. I am also diabetic and have hypothyroidism. Need second opinion I wanted to ask that will I have to take progesterone all my life. How can I correct it?