Lately, in the past 3-4 weeks, I ve noticed that I have gas pains, mild, but I notice it and when I burp, I have a sour taste that comes with it. I don t have heartburn. I don t burp a lot, but when I do, it is with a sour taste. I don t normally have gas pains, but I ve noticed lately that I do have them, though they are mild. Both are an oddity for me as I am normally quite healthy, I take a tiny water pill for high blood pressure, but that s about it.