LOS ANGELES (AP) — Gwen Stefani says she thought her feet were going to shake off while performing “Used To Love You” at the American Music Awards on Sunday. She says it was not nerves as much as she felt exposed. Stefani promises she won’t have an album full of downer songs as she splits from Gavin Rossdale. She says she wrote the album when she was mad, but then she cycled through other emotions as well. Stefani says she is not finished writing and she’s in “a happy spot” now.