Crusty nipples? TMI - NO PIC

So, I'm almost 14 weeks and for about 5 days, I had this white/yellow crust on the tip of my nipples. I tried to squeeze something out, but got nothing at all. I also picked off the crusty stuff, and it's like it was stuck inside my nipples a little bit. It came right off, but then I bled a little bit. Now it's all gone, though. No more crust at all. So.....Could I be lactating this early?? And if so, why would I stop?