Definitely get checked out.. when I was pregnant with my son I ended up in the hospital for 5 days because I let it go so long I got a kidney infection and ended up not being able to pee on my own. Better safe than sorry hun
I decided to go and am here now hopefully they can tell me something.
I would go. I've had kidney problems since week 20 (-now week 28-but due to lack of space and swelling. not infection) and know it can be horrible pain. And if it is infection that can lead to serious issues even if you weren't pregnant. So get going and get it checked out. Feel better :)