Reassurance about white gold ring.?

If it's stamped as 9K, then it is real gold but gold will bend if you put too much stress on it and the band is thin. If you have a hobby or do a sport that stresses the ring, you might want to remove it when you do that. Also, if you're worried about the stone settings, a jeweler can check the prongs and tighten them for you. Good luck!! : P