Acid Reflux Getting Worse

This acid reflux is driving me nuts.  It can come any time and last for any amount of time.  It seems to happen at random.  Usually hours after I’ve eaten.  I’ll just be sitting on the couch and for no reason some stomach acid will come up.  Or I’ll feel that acidic burning the back of my throat.  Or I’ll bent over and then some will come up.  I’ve tried Tums when it lasts a long time but they don’t help much.  It often doesn’t last for more than an hour or so but sometimes it can last hours.  I get it at night while laying down which makes it hard to sleep and I also get it when I’m just sitting on the couch.  I guess it’s better than having nausea but it doesn’t feel great and it’s just getting super annoying.