"I guess there are times when we all might have wished we were a man ."
Unfortunately, men can get breast cancer, too. In fact, it can be more serious for a man because 1. the most common type of breast cancer men get is pretty aggressive, and 2. men aren't taught to look for lumps like we are.
I've never had one as big as you're describing, but I've had pea sized cysts- usually under my right arm for some reason. Mine are usually tender for a day or two and then they drain and disappear. Occasionally I'll just have a sore, hard lump for a day or two, but it never rises to the surface and just goes away.
How are you feeling otherwise? Could it be a swollen lymph node?