I have had a problem since I was younger. Sometimes my stomach will hurt and I have a gassy buildup. I will burp and when I burp it smells like I just passed gas. I thought it was certain foods I would eat, so I stopped eating them. Well last night I had something that was not rare for me to eat and I was up all night with a upset stomach and burping. It is not only embarrasing, but it lasts one to two days and it is very annoying. Any advice would be great. Thank you!