I have experienced these symptoms for 3 weeks :
1. I feel sick and burp up after about 20 minutes of eating a meal.
2. My lower stomach hurts and makes me feel sick.
3. The left side of my stomach up towards the rib i receive a sharp pain when i breathe in sometimes.
4. I have noticed a black tar like substance in my faeces but only sometimes.
Could this be IBS or something else?