I had the same thing happen. All my villagers were women except two and then my oldest man died. Had to breed that last guy like crazy to get some boys! He didn't seem to mind, tho...LOL
Now I'm waiting for one of the boys to be 18. Stuck at 9 villagers, seven women and two boys. I didn't even notice I had no guys until one of the two died.
That's what makes the game challenging!