The foul discharge can be normal after Novasure, as there can be debris and dead tissue inside. However, this should resolve in a few days. If you develop a fever
or pain and discomfort in your belly, or heavy bleeding, it may be a sign of an infection and you should be seen in the ER. However, if it is just a small amount of foul discharge, you can wait until Monday.
I hope this answers your question, please let me know if you need any more information