Thanks all,
Appreciate the thoughts. The irony of the whole situation is those two times were one of the very few in my life ive even done anything like that. If I had a more steady and regular personal life in that respect, I probably would not have gotten myself into those situations to begin with. I certainly havent done anything since... Im too scared Ill catch something!
My sore throats are also very strange. My throat doesnt become sore unless Im doing strenuous activity, such as driving for long periods, or if I start talking for more than 2 or 3 minutes at a time at full voice. Then my throat begins to get sore occasionally and my voice starts to get a little hoarse.