The back pain is most likely from the UTI. It can cause pain in your kidneys. I have had quite a few, ( I hate to say), but I wouldnt worry too much. If you are not bleeding more than the mild spotting from the UTI then you should be fine. Give it a few more days. I am sure the symptoms will subside.
I agree but you need to quit stressing about it if you have no bleeding then you're probably ok and cramp brown spotting and back pain are all normal in pregnancy so just calm down and try not to stress it's not good for the baby.
ok the back pain is probably from the uti. is it like right above your hip bones? thats where i had back pain when i had a uti. im not sure about it shooting down your legs. hope this helps! good luck!
It's hard to tell. It could be siatic pain to. I would go see your doctor.