How long do you have to wait to be sexualy active again after novasure and what are good ways to make your man have more stamina and get bigger?

Depends: If you are not bleeding or having the watery discharge about 2 weeks is enough to wait. He should see his doctor.

2 weeks: I recommend no intercourse for two weeks, but some physicians may recommend a longer time. You should ask your physician what he or she recommends for you. There is no need to wait longer then 4 weeks, and remember, there are alternatives to intercourse ;) as far as your partner, if he suffers from low testosterone, that is treatable. He should be tested.