I Have Been Experiencing Severe Bloating And Gas For Almost

I have been experiencing severe bloating and gas for almost a year now. I have even been to the ER about 4 times this year for it being so painful. They just give me a GI cocktail and some anxiety meds...then send me on my way. I have been under an extreme amount of stress this past year also...in every area of my life. I have also been experiencing (more often than not these days) episodes to where my food feels as if it gets stuck right where the end of the esophagus meets with the stomach and where my lap band is that I had put in when having my hiatal hernia was being repaired in Dec 2011. Had some complications in the beginning; gallbladder had to be removed 3 weeks after I had it put on, all fluid and air removed that came in the band originally due to not even being able to drink liquid without feeling extemely full, lost all 50 lbs (22 1/2 inches) within the first 3 months...which caused my hair to fall out like crazy. After that, things ended up going well. At my 1 year checkup, I decided to get a small fill only as a "just in case-won't be paid for after this"; clearly I knew I wouldn't be able to afford to get one later if I felt I needed it. Was good up until about a year ago. My food gets stuck...more so with like a tortilla or something like even a donut or a muffin; but the next day I could eat those and be fine and be having problems with other foods, it could literally be different each time I eat. All though, the strange part, is that I have to focus and almost make myself throw up...then, it isn't usually the food or whatever that seemed to have gotten stuck, it is a thick bubbly (I believe it is stomach acid) "spit/mucus-like" substance. It coats the entire esophagus and then my mouth and throat and it is very hard to get it to go away. I had a colonoscopy and an EGD done around towards the end of last year, that other than the one non-cancerous polyp removed, everything else w2as completely normal. Yet here I am?? Which now takes me brings me back to the actual thing that lead me to this site. I am having tailbone pain that just came out of nowhere. I am thinking it could be related to the blaoting and gas and of course the ungodly amount of stress that I am still under, but not sure? Honestly, I am wondering though, of all of this over the last few years, all goes back to be related somehow to the lap band. So again, why could I be having the sudden tailbone pain (feels bruised and hurts really bad if you put pressure on it)? Which then makes me question if I should get the lap band taken out?