Yesterday I went to the Dr for a really bad uti. I also mentioned that I had one at Xmas and was only prescriped a 3 day course which wasn't effective enough. She gave me the alternative nitrofurantoin (the type I received from the pharmacy are called Genfura) after feeling better yesterday evening I was pleased as they worked so quickly. However, this morning I woke up feeling awful. As the day has progressed I have a really sore pain across my vagina, bottom of my bum cheek and down my thigh, feels so bruised-has anyone else experienced this? the pain is unbearable. I also have headache, shakes, chills, nausea, loss of appetite etc. I don't know what to do? Do I stick it out and continue?