I had a UTI at my last doctors visit (although I didn't even have any symptoms) so they put me on antibiotics. I finished them yesterday but ever since I was on them I had an ache in the middle of my back on my right side. I'm waiting on my doctor to call me back to see what needs to be done but for any of you who've had a kidney infection, what does it feel like? I'm scared that's what it might be.