I went for a 19 weeks check up everything was good other then the baby's kidneys the right one os heaps bigger than the left they said its nothing to worry about but I went for nother scan now 29weeks and thjere is no change I'm getting really bad pains do I need to be worried

You are wondering if the size of the baby's kidney is related to your pain?
This is too vague and doesn't begin to cover your whole history, sorry. Call your doctor's office.