I Am A 60 Year Old Male In Generally Good

I am a 60 year old male in generally good health (6'0", 180, play tennis twice a week). For the last 4-5 days, I have had frequent and sometimes uncomfortable belching 10-15 times a day. I thought that it might have been something I ate, but it seems strange that the condition would continue for so many days. (I also have been prone to hiccups over the last couple of days. Any thoughts?