Eventually, the bottom line is that anything that churns up stomach acids will give you heartburn. It got to the point with me that water would do it. 4 gulps of water and I was well on my way! I take Prilosec every day and it helps! For those days I need a bit more (and it's only about 2 or 3 times a year and it involves red wine or sour mix
) Tums picks up the slack. There are some things that may help if you Google natural remedies for heartburn but if it's bad you just need to start Prilosec.
Acidic things certainly can trigger it and BBQ sauce is highly acidic. But remember, ANYTHING you put in your mouth as the capacity to churn up stomach acids.