Kitty,
When I feel a UTI coming on I double up on my cranberry capsules and drink loads of water. And I get myself to the bathroom quick when I have to go. It takes me a long time to empty thanks to MS, but I sit there and wait it out. At work they think I'm just wasting time in the bathroom and DH thinks I'm dawdling in there but it helps to wait until you completely empty if you can. Get well soon and enjoy those beautiful grandkids sweetie!