Me too I had band to sleeve in Dec and I am down 50lbs. The only problem I have if I over eat it really hurts, so as soon as I get the feeling of being full I stop eating. And there are certain foods I eat they hurt my stomach like breads, rice foods that seem to swell when moisture hits them, I avoid them all. Good luck you will be happy with your decesion.
What you're feeling is completely normal. Your new sleeve is still swollen from the surgery (takes about 10-14 days for swelling to go down). Just remember that at this point, anything you drink (or eat) to take itty bitty baby sips (or bites). Wait a few minutes between sips/bites. I had a band to sleeve revision on 3/22/12 and I'm down 32lbs. I can tell such a HUGE difference with the sleeve. I'm on soft foods right now and by the end of next week I'll be on "regular foods" (woo-hoo)!! It will get better for you, I promise!
