Normal contractions can cause uterine pain, but if the pain is severe and persists without relief, one needs to be alert to the possibility of late miscarriage.
The occurrence of red deformation of the fibroids in pregnancy combined with uterine fibroids can cause abdominal pain and fever, and if there is also vaginal bleeding, fever and other discomfort, prompt consultation is needed to clarify the cause except placenta praevia and placental abruption.