Did an ultrasound, and doc said that appendix was upside down, and over another organ. what could that mean, upside down? is is dangerous?

Appendix: The position of the appendix is variable. It can point up, down, or sideways normally. You probably don't need to worry.

Not important: If appendix is not inflammed and there is no evidence of appendcitis usually does not matter what position it is in. Appendix comes off cecum and mainly behind cecum, and if cecum mobile can move around.