Help!!! How Do You Know!?!

Hey Y'all

How can you tell if your band has slipped? I've read that if it happens you won't be able to keep anything down and I've also read that if it slips you might not be able to tell at all. I get really paranoid that my band might slip at any time. I've PBed a few times and I called my doc today. They told me that if my band slipped I wouldn't even be able to keep Water down. I've been eating and drinking ok but, my throat has been sore lately. Also I'm starting to feel hungry again. I'm hoping that I just need a fill. I have a 4cc band and right now it's only got 1.2cc. Yesterday I had roast for dinner and I felt some of it get stuck. I didn't pb and it went down on it's own. My way of thinking (all though I might be way of base) is that if something is getting stuck than the band is still in place. I'm driving my husband crazy worrying all the time. Please any advice would be so appreciated right now.