These spells do not work. The reason you started seeing your breasts growing is. probably because your body is still developing. You could look into push-up bras or wearing clothing to make your breasts appear bigger but a spell won't change them.
Most working spells I've noticed take about 1 moon cycle [sometimes more or less depending on a few variables] so keep yourself open and observe your surroundings for hints of the spell. Spells rarely put up a neon sign that says 'over here!' they're more subtle. Say you cast a money spell, walking home, you get an urge to walk down a side street for a change, and along the way you find a store with a 'help wanted' sign. That's most likely the spell pushing you in the right direction.