Tora is a otherwise healthy and happy 2 yr. old SD, whom I adopted before
Christmas.  Being a college student, I had to take her to my parents home
for the holidays and shortly after we returned I noticed she was using the
litter box more frequently, only urinating small amounts that sometimes had
spots of blood.  I immediately took her to the vet and they did a culture
sample that found no bacteria in the urine.  The x-ray showed no signs of
crystals or blockage.  The vet explained that it could be due to the stress
of moving.  Nearly $300 later, she was prescibed AMOX-c 100 mg tablets and
things got back to normal after a week.

This behavior has unfortunately began again.  I noticed about two days ago,
when she was about to squat in my laundry basket.  There have been no
stressful events, although I haven't been around the apartment as much as I
would like to be.  We know that it's nothing extremely serious, otherwise it
wouldv'e been noticed in the tests.  My research shows that the antibiotics,
while they may  reduce inflammation, do nothing if there is no bacteria
present in the urine.

I've introduced another litter box, and refresh her water every 4 hours.
She's acting normal, doesn't seem to be in pain (she doesn't cry out when
she goes), and is eating regularly.
Can anyone recommend a more natural or preventive remedy for this problem?
ie. dietary or social