Had ulthera done few weeks ago on face and neck, with botox in jawline. Initially it really tightened and my neck looked better. Now all of a sudden it completely sagged! It also looks like I lost some fat in the area around my chin. Please help. Why is this happening? I know the effects take months to show but why is my neck even saggier than before? This scares me because even if it did tighten for a while, when the effects wear off it will be even saggier!