Hi! I'm 41 Years Old And Had A Miscarriage 5

Hi! I'm 41 years old and had a miscarriage 5 months ago. My body was not expelling the baby, so I had to take Cytotec. Ever since then, I have had monthly chest tightness around PMS time, which moves into my bowels as the day progresses. It usually lasts about 24 hours. I am wondering if my hormones are out of wack or what is causing this problem. It is very painful at times.