Hey, Peg! I had the same thing this summer (nosebleeds) and went to an ENT. After a CT scan, they found TONS of polyps in my right sinus cavity. Living in the Ohio Valley, it's just a way of life. They also found that my left sinus cavity was completely filled with an infection and they put me on 3 weeks of antibiotics and antibiotics. I still have nosebleeds, but at least they're minor...
Hang in there!