Really worried and going to try to go to the dr tomorrow!

Ok so my last week has been up and down.... Wednesday night i got stuck on some smoked ham and threw it up.... Well Thursday i couldn't eat or drink anything at all which really worried me!! and i had a dull ache in my right side... i just figured i was swollen... well Friday i took it easy and stayed on liquids for the most part I drank milk all day and did great.. that night for supper i ate a hot dog no bun and it stayed fine! I woke up Saturday and was back to not really being able to eat or drink... now today I woke up and for breakfast tried a sausage link... went down great then i drank some sunny d juice (i usually treat myself to that on my weekend breakfasts) then all of a sudden i cant not even keep water down!!! When i drink anything there is a burning feeling in my right side (kind of at my breast bone) its like i can feel when the water gets to that point... but it doesn't come back up instantly like if i had took to big of bite... it will sit for 30 minutes or so fine and all of a sudden it has to come up... I'm really worried I have never had a ache in my right side or the burning feeling like this.... Has anyone else had these troubles? I already am getting a substitute for my classroom tomorrow and I'm going to see if they can work me in... but I'm worried! I'm scared they will say something about taking my band out and I have just reached 68 pounds lost! Before this week everything was GREAT!!