Hi, a couple of days ago I went to the toilet to urine and got a sudden unbareable painful cramping in my lower stomach, I took some ibuprofen and then started vomitting right after, I was fine after that but I still had a slight pain in the lower stomach which has carried on for two days, it s bareable but quite uncomfortable. I m also needing to urine very often but only small amounts, I m prone to uti s, does this sound like a stomach bug or a uti? Period is also delayed I think from the vomitting.