I have lots of experience with this. I would have said everything Diandra above has said.

D-Mannose really seems to be very helpful!!! Go to your local health food store and get a well known brand and follow the instructions. I think it is probably best to take daily. The D Mannose has helped many many people (although most doctors don't wish to check into it)

Apologies if a little gross and personal, but if possible, use a wippee, like Wet Ones after a bowl movement. Use paper tissue first and then the wippee afterward. Keep them in your purse, etc.

Drink lots of water and eat well. Eliminate sugar as much as possible. Take a multi vitamin daily. And use other vitamins as you chose. Do not drink sodas.

BTW, since doing these things, I haven't had one infection and it's been at least a year (knock on wood).

If you have sincerely tried all of these things, including the daily D Mannose, then I would consider the use of Macrobid when having relations.