Donna,

I'm glad your infection didn't effect your kidneys!

If you're concerned about your kidney function, watch your urine output. If you begin to see that it has begun to drop significantly, see your mdoc as soon as possible.
Speak to your mdoc to see if he has done any renal panels recently. Discuss your concerns with him, and see if you need to have them regularly. The results of these tests can give you and him a good indications about how your kidneys are functioning.

Take care, Donna!