Possibly ringworm?

I have what looks like ringworm on the lower leg, about half way down and on the side of the leg. its about the size of a quarter and is red and itchy, and it weeps if i scratch it. i have fairly dry skin, and this rash/ringworm thing comes back every year at the start of winter (so around may (i live in the southern hemisphere, so its winter now)) and lasts for a few months. i am seeing a doctor about it tomorrow, but ive gotten in every year for about 5 years now. I'm 21.