question: Im 32yrs old. I have duplex system in my left kidney. I found it in 2010 in my 28 age. In 2009 I got alergy in my body. I felt itchy and got bumps in my skin. So I couldn t find what are the things allergy for me. So in 2010 I had a urine block then afer cat scan doctor found my duplex system and the urine block. Then did the surgery for my kidney problem. Doctor did the small cut to sist in my left kidney . Then my pain and everything was ok. Last year I delivered the baby girl. That period I didn t feel anything wrong. After my delivery again I got the allergy as 2009. At that time 4 months for my baby . Now 8 months +. Still couldn t find the what my allergy. In my urine test mentioned the protein . I think dis allergy also side effect of my duplex system. Can u tell me anything about this please. Thanks.