I Have Had Nausea And Bloating After Eating Ribs. This

I have had nausea and bloating after eating ribs. This has been lasting for 7 days. I vomited a few days later and still having nausea. I get bloated after I eat now and my stomach is girgling most of the time. I have black stool and once in a while a small amount of pain discomfort on my left side just underneath my ribcage up front. Could this be a virus or something more serious? It seems if anything I eat causes this bloatedness. Any ideas?