HELP! Milk so early?!?

Tey
Hey girls! I'm a FTM and I have so many doubts! If any of you can help me ease my anxiety I'll be forever thankful! So... I'm 16.5weeks and like 2 days ago and today I noticed in my dress that I had little wet spots around the breast area and when they dried they stayed a little hard, not like whater that just dries and it's like nothing happened... (Idk if I'm making any sense... 😕). Well I was wondering if this is normal this early on?! I have pretty big breasts, DD, and going up... So is it? Normal?!