Breast leakage

Amanda
My left breast had been killing all day. Tonight I laid on my left side for about 30 min while watching TV and when I sat up I had a pretty large spot of wetness on my pajama shirt around my nipple. I kinda freaked and my hubs just laughed suggesting it was water...well that's great but where did it come from? Haha. So I did squeeze my breast and milk came out. Ummmm I'm only 11w6d. I know it can happen this early but woah! Anyone else?