My 3-month follow up ultrasound showed my two largest fibroids grew to 31x26x18 mm from 19x22x22 m and to 40x36x27 mm from 30x29x24 mm. concerning?

Fibroid growth: Growth of fibroids prior to menopause is common and not usually concerning. Treatment for fibroids is based on symptoms (pain, bleeding, pressure, etc) and not out of a concern for cancer which they rarely are. Estrogen causes fibroids to grow. Treatments can include medical treatments to lower or block estrogen levels or surgery to remove the fibroids or the uterus and fibroids.

Probably not: Fibroids are benign tumors. While not dangerous, when they enlarge, they can press on the bladder and give a constant and increased feeling to urinate. The larger they get, the greater chance they can bleed or degenerate, which in turn can cause pain. They may be a cause of back pain, vaginal bleeding and even pain during sex. All of these symptoms may increase the larger the fibroids grow.

No, but depends: Fibroids often grow and shrink during the perimenopause years. If one is pressing on the uterine lining and grew suddenly, you would know because your bleeding would get worse. Yes, your fibroids are growing, but as you go through menopause they may also shrink... so the decision as to what to do will likely depend on what issues they cause... if bad bleeding, pressure or pain, then see your doc