My lower right back hurts. I’m also feeling nauseous. To further complicate matters, I’m having a bad period, and have taken some pamprin 1.5 hours ago but nothing helped but a hot shower hitting that area. My left side of my back doesn’t hurt at all. I also suffer from IBS with severe diarrhea. But my tummy area only hurt at the beginning. I normally don’t throw up, but have have dry heaved a few times. I have eaten, but nothing comes out, nor am I having diarrhea. I can barely sit in bed and have a high pain tolerance.