I Had Rhinoplasty 2 Months Ago Why Do I Have Severe Bleeding Still?

I had rhinoplasty 2 months ago and within the first month I had severe bleeding in my right nostril. My surgeon then silver nitrated it (i believe thats what its called) then we had no problems until a month later where I had to be rushed to emergency because my left nostril had even worse bleeding it was running down my throat and out my nose like a tap nonstop. He then had some acid (match stick looking) burning the cause in my nose. Why am I bleeding? I don't want this to happen every month!