I think you need to talk to your surgeon about what is going on. You haven't mentioned your surgery type that I see, but food not going down/getting stuck and throwing up 1-2 times/wk at five months is a problem (but maybe more common of a problem if you have the band?), and your surgeon should know about it so he can help you with a solution. You can damage your stomach, esophagus, mouth, and teeth from this.
5'9" All weight lost post-op. Goal weight determined by body composition testing.