Health check. Last night, the color Doppler ultrasound asked the physical examination doctor and said there was something wrong. The doctor said it was basically nothing serious. What does this mean?

That's no problem. You can wait until the medical report comes out and ask the doctor. For example, many people have some small cysts. Many can be absorbed by themselves and will not interfere with life. Don't be too nervous. If there is really a problem, I suggest you go and have a look again. Regular physical examination is good, but you don't have to be too nervous.