Dear Gabby,
It's always scary when you pee blood. That we all can attest to. But you have to remember that the blood can be caused by many things. I agree with George that seeing a Great urologist (one who has a lot of experience) is mandatory at this point.
Have you been seeing a Urologist through all this, or a General Practitioner?
When you do see the Urologist make sure that he/she takes a urine sample to have it tested for microscopic blood.
George is also right that you should ask to have cystoscopy (a small tube camera) done, to look into the bladder. Its is the best way of knowing what is going on in side. Here is a link to The Mayo Clinic on it:
www.mayoclinic.com/health/cystoscopy/MY00140
Be sure to tell the urologist of you'r families history of Bladder Cancer. Bladder Cancer is not genetic, but having a family history of it increases you odds of getting it.
Even if they see a tumor it dose not mean you have cancer. They must do a biopsy of it to send to a pathologist to be checked. Most tumors are not cancerous, and can simply be remove and you are good to go.
Remember we are here if you need us. Don't get to worked up over all this. That is the worst thing for you to do. Lets take this a step at a time, TOGETHER.
Feel free to post if you need any help, or have any questions.
Mark