If you’re a woman and you’re reading this, chances are you have fibroids or know someone who does. In fact, between 20 and 80 percent of women will get uterine fibroids before the age of 50. This will usually happen during a woman’s childbearing years. But, the good news is that fibroids are almost always non-cancerous and can be treated. There are four main types of uterine fibroids. Size and location of a fibroid determine what type of fibroid it is.