I would start now to protect your GI tract from the anti-bacterials. You're going to be traveling, right? Capsules would probably be easiest for you. I'm not as familiar w/ the capsules as some of the other peopel here, so I'll let them advise you.
As someone who's been battling yeast for 11 months, I really wish I could turn back the clock and take probiotics with the antibiotics that I took last summer for a UTI . . .