hello i am dr.kalpana ENT specialist ,your question is valid but actually reflux or GERD(gastro esophageal reflux disease) has multiple presentations which may be bloating sensation,burps, burning sensation,chest pain or it may cause ear and nose problems like sinusitis, even and in your case its like a lump in the throat or sticky sensation in throat.Treatment is what you are taking omeprazole but diet is very important especially intake of tea or cofee,spicy food has to be restricted and take small frequent meals and give two hour interval between going to bed and dinner.