Failing kidneys will cause your blood pressure to rise, but increased blood pressure will also promote the progression of kidney failure, so it is difficult to distinguish cause from effect. But if your blood pressure problems clearly began before renal problems were detectable, blood pressure could have been a cause rather than an effect.
Anemia is a classic symptom of declining renal function, since in addition to all the many other things they do, kidneys also produce erythropoietin, which supports normal hemoglobin levels. You should be taking one of the many forms of synthetic erythropoietin to boost your hemoglobin levels, though correction to normal values is dangerous, so expect your doctor to permit a hemoglobin level of no more than around 110, rather than the normal 120 for women. (For men the normal values are around 140, so they are in an even worse situation with renal failure, since their anemia has to remain even more severely uncorrected.) You will have to take an iron pill in order for the synthetic erythropoietin to work.