Miss Diva,
This is totally normal. Some do feel a restriction after their first fill, however; many do not. I am like you and feel no restriction after having had my first fill last month. Some of us take a second, third or even a fourth fill before we begin to feel like the band is working. I am imapatient and bummed myself . . . but we must learn to be patient . . . and trust that the band will be the tool we signed up for when we had our surgery.
Stayed tuned . . . it will get better!