Food poisoning ?

A week ago i bought a jar of Wild Mushrooms Brushetta, it tasted pretty good but ever since i've been feeling sick. For the first about 4 days i had the taste of it in my mouth, so i thought it was just indigestion, i took some digestive enzymes
and now i don't taste it anymore, but ever since i have a stomach pain and its not going away. Its not a constant pain, it comes and goes, any idea what i could do about this ???

I took some oil of oregano, milk thistle and enzymes but it does'nt seem to help.
Any advice would be helpfull, thank you.