when i am 'due' to menstruate', which i shouldn't because i have had ovaries removed, i get a boil on my inner thigh that is very tender, and eventually opens and drains. This hasn't happened in awhile, since ovaries removed, and also 2 bouts of breast cancer, which led to the removal of breast. Woke up this morning with a boil on inner thigh that is ready to explode and very uncomfortable. Why am i getting these?