Blood in urine test?!

Blood in urine test?

i took a urine test and and they told me they found a moderate amount of blood in my urine, it wasnt visable to me or the doctor but was detected with the strip, so i went back the next day and they said it was still there but not as much as the day before, they said that there is trace blood, moderate, and it goes higher up, but im in the moderate range, what could cause this? should i worry? i heard one doc say it was protien and maybe i was dehydrated, i work out and am on a diet, i also took some antibiotics, could any of these cause this, some one help, i take another test in a couple of days

4 weeks ago
i am a male and i am 27 years old if that helps

Blood and/or protein in the urine is common after a heavy workout or after stress or when you are dehydrated. We commonly will ask patients to return in a week or so to be sure their urine is clear and that they don't have any kidney problems. If they have continuing heamturia (blood in urine), we look for pathologic causes (disease), but usually it is nothing to worry about.
you should be sure to stay well hydrated all the time to avoid kidney stones and esppecially during exercise, illness or infection, and hot weather.