[Stones] Blood after stone removal

[mtjaffe at verizon.net]

Hi:  Lucky had stone surgery 4 weeks ago (this coming Thursday). It was done by an experienced vet who also cares for the piggies of a rescue in my area (my regular vet didn't have the experience to do the surgery).  Lucky came through the surgery well and appears so much better -- not in obvious pain anymore, eating well and running around.  However, he still has blood in his urine-- though not constantly.  I have talked to the vet who seems to think this isn't too abnormal and has now put him on his third round of  Baytril (another 7 days).  I'm a little worried -- I was hoping by now that I would be worrying more about managing his diet than blood. (It was an oxalate stone, by the way).  Any advice or thoughts? -- mostly on whether still having blood in his urine is within normal range after surgery and for managing his diet ongoing. (He used to love dandelion greens and I have cut those out completely, much to his dismay). 

Lucky's slave