The odds are it was somebody who was just dialing numbers at random looking for a woman's voice. I always though if that happened to me with a repeat call I should drop into the male voice.
As a woman, you should now consider what you would do should someone attempted a break in to your house. If you are not comfortable with a more effective weapons, at least consider sliding a base ball bat under you bed. In my case, I still have my physical size, I am bigger than most men and I have no problem with fighting dirty.