Fluid in the uterus on ultrasound
is a very non specific finding. What I mean by this is that there are a number of different potential causes. You will need to talk with the OB GYN doctor
(or other doctor) who ordered the ultrasound in the first place, as they know best what your symptoms and situation is and, as a result, will best be able to help you interpret these findings.
For example, fluid in the uterus might be picked up during a menstrual cycle when the uterine lining is being shed. In this case, the fluid would be debris and blood from the uterine lining.
Alternatively, various infections of the reproductive organs, such as pelvic inflammatory disease might lead to finding fluid within the uterus.
In older women, uterine fluid might be concerning for a cancer affecting the lining of the uterus.
Therefore, as you can see, the possibilities are quite varied and depend a lot on your specific situation. However, your OB GYN doctor should be able to sit down with you and help put the ultrasound findings in context for you. Based on this discussion, they will help you decide what the next steps might be.