What does muscle spasms in uterus mean?

Muscle contraction: The muscle components of the uterus are contracting in sync or not and the resulting sensations that are felt is called a spasm. There a quite a few causes for uterine spasms and should be talked about with your doctor. Ectopic pregnancy which could be life threatening could be a reason. Premature labor could also be the cause of uterine spasm.