I just got my 2nd fill last week and I've been having a hard time eating. I know that's kinda the point of the band, but I eat 4 bites and find myself with discomfort in my chest. The food does seem to go down though. I'm eating slowly with small bites, but now I find myself wanting more yogurt or slidey foods to supplement the 4 bites of real food. Is this normal restriction or is the band too tight?