If ppis don't work on my reflux symptoms (or worsen them) could I have IBS instead? No burning. Got tight throat, difficult swallowing, gas and ab pain

Need to find out. If food is getting stuck temporarily after swallowing, you have a definite problem with the esophagus. If it's just a tight feeling in your throat but swallowing is ok, it may just be caused by anxiety. You should see a health care provider and find out which it is.