Botox in the upper lip, can't smile normally, when will this go away?

I have a very good injector but this time she did 2 tiny botox injections in my upper lip, and now I can't smile normally. It's not awful or lop-sided. It just doesn't look like me at all. My upper lip hangs over my upper teeth, which are now mostly obscured when I smile. She told me to ultrasound the area at home, will this help? I'm guessing not :( Will it wear off faster than 3-4 months because it's an area that moves a lot? Sad without smile.