A month or so pregnant with small fibroids on the back wall of the uterus, as long as they are not submucosal fibroids, they will not have any effect on pregnancy, so they usually do not need to be treated. Uterine fibroids are the most common benign tumors of the female reproductive system, mainly seen in women aged 30 to 50, and their occurrence is mainly related to estrogen in the body, which belongs to estrogen-dependent tumors. When fibroids are relatively small, they basically do not have any effect on the body, so most women may only find them when they have an ultrasound. If you are pregnant for more than one month and an ultrasound reveals a small fibroid in the back wall of the uterus, as long as it is not a submucosal fibroid, it will not affect your pregnancy, so you do not need to treat it. However, if it is submucosal fibroids, it may affect the fertilization of the egg, so it may lead to early miscarriage. If a submucosal fibroid has caused an early miscarriage, hysteroscopic surgery is usually recommended to treat it, and the pregnancy will not be conceived until after the surgery.