You left the house feeling odd. You didn't know why you were there or even who you were.
Perhaps the best way to jog your memory is to ask others. Go as the woman in front.
(Press hotkey 'L' to view your quest log. Right-click and NPC to start a conversation.)
"You finally woke up!" Cynthia exclaimed. "Did you rest well? I hope you ejnoyed your stay in my house."
"I I didn't see it with my own eyes, I wouldn't believe you were the child in the Blue Crystal. Where did you come from? How did you get into the Blue Crystal?"
"Oh, I'm sorry, dear! You just woke up, and here I am asking you all these questions. And it seems you don't remember anything...?"
"This is Andrew Village, and I'm Cynthia." Her smile was full of kindness, which helped soothe the anxiety you felt about facing an unknown world.
"My son Airy works in the mines, and our Mining Captain found you sleeping inside the crystal while he was digging. We were shocked to find that you were alive and well."
"It's too bad you lost your memories, but we'll help you any way we can."