Breast leakage!

I have a 3 year old and stopped breast feeding when she turned 1. I just got my IUD taken out 4 months ago. And this month started TTC. I just finished my ovulation cycle yesterday. I just looked down at my boobs and my left one was leaking (looks like milk) so I squeezed both of them and it kept coming out. I haven't had this since I quit breast feeding. Is this a sign of pregnancy?! Any information would be greatly appreciated!!