Dear AimeeV: The usual explanation for liver-like clots is a heavier type of flow. There is an enzyme produced by the lining of the uterus designed to keep menstrual blood from clotting. This allows the menstrual fluid to more readily pass out of the tiny cervical canal and into the vagina. When a woman is bleeding very heavily during her period the amount of flow surpasses the amount of enzyme--thus leading to passage of large clots. However, the action of this enzyme is localized to the inside of the uterus so it should not have anything to do with inability of other blood to clot.
Large clots do not predict problems with fertility. Several other things you have mentioned MIGHT have an impact on
future conceptions:
1. Frequent ovarian cysts large enough to require surgical removal---IF you have polycystic ovarian syndrome (PCOS) that can decrease frequency of ovulations making it harder to conceive. Yet, women with PCOS tend to have multiple, small ovarian cysts ("string of pearls") rather than large dominant cysts.
2. Extremely painful periods---IF your very painful periods are caused by endometriosis ("endo"), then endo can decrease fertility by several mechanisms. Yet, severe cramps can also be caused by increased production of prostaglandins by the uterine lining. This does not impact fertility.
Prostaglandins create both the cramps of labor and menstrual cramps by making the uterus contract. Common cramps may start prior to the onset of flow and usually last 72 hours. There are also receptor sites for prostaglandins in the bowel and central nervous system. Thus prostaglandins can produce not just cramps but also nausea/vomiting, diarrhea, headaches, and other "flu-like" symptoms. Ways to block prostaglandins can include BCPs, or anti-prostaglandin drugs (eg ibuprofen, naproxen sodium, ketoprofen, etc.). Some alternative healthcare providers such as naturopaths stress using of Omega 6 fatty acids in dietary choices, and cramp bark.
Aimee, your best bet for getting the most exact answer about the cause of your super painful periods is to see a GYN or your local family planning clinic. It is worth considering a consult--especially if there is a way to decrease the pain.
Yours,
Jane