I don't think that it is normal to see blood in your urine, and I don't think that taking laxatives or other "medicines" to make you shit would help.
Crispy; I think that you should see a doctor as you could have UTI, as the symtoms are very similar. I believe that if UTI is not treated for some time, the infection could spread up to your kidneys, which would not be good.
You shouldn't be embaressed about seeing a doctor because they are there to deal with medical problems. It's not like they would tell anyone (maybe other than your parents), so just go for it.