When will Sculptra start to break down?

I (38y/o fem) had two sessions of sculptra this year: The first one in may, one vial was used, and a second one in July, with a second vial. The treated areas were the mid face (my area of concern), parallel to the nasolabial folds and along my chin - which I was very concerned about, as I feared it would distort my shape. The injector told me it wouldn´t. Now, 10 weeks post 2nd treatment my face just looks round with no contour and my jaw is huge. I´´m scared it won´´t stop growing. Help!