As for the yeast -

While you are on antibiotics you can either put some plain live culture yogurt or an acidophilus capsule in there. (Yes, IN THERE - dip a tampax in yogurt) The capsules are not messy like the yogurt. Do this as often as you need to and for a couple of days after taking the antibiotics.

The reason this works is that when you are on antibiotics, you kill the lactobacillus acidophilus off that usually lives down there. With the bacteria gone, the yeast has a party and goes wild. Putting L. acidophillus back in there keeps the yeast in check again.

Cheap, no chemicals and easy to find - nearly instant relief!

Also - it does help to EAT yogurt while you are on antibiotics because this puts the same bacteria back in your gut and helps prevent the GI side effects that a lot of antibiotics have. Check to make sure though that the antibiotic you are on can be taken with dairy products - some can't.

and don't forget to use backup birth control on antiotics...unless ya like surprises!