question: Hi doctor, I am 32 years old. My period and period symptoms have always been the same every time. I always have severe PMS symptoms with horrible cramping, breast soreness and on the first day of my period I always pass big blood clots with heavy bleeding. My period will last anywhere from 3 to 5 days. I have always been irregular with my cycle ranging from 31 to 40 days. On 5th of last month, I had a normal period. On 25th and 26th, I had unprotected sex using the pull out method. From 11th to 15th of this month, I experienced dull cramps occasionally. My period was very light, but dark brown the entire time with some light red mixed into it. My period was so light and I did not even need to wear a tampon. When I put a tampon in it would come out dark brown with light red scattered through it and looked like clear cervical mucus in it as well. If I stuck my finger in my vagina it had brown and red, but nothing was really coming out. I am confused whether I even had a period. I took two pregnancy tests on 11th and 14th, which came back negative. What are the possible causes for a dramatic change in my period color, amount and symptoms? Yesterday, my breasts were perkier than usual and the ache is on and off. Other than that, I have had no pregnancy symptoms or menstrual symptoms. Is pregnancy possible? If so, then how likely is it possible?