Skin changes

Mrs • Boy 1/2008❤️Girl 8/2013❤️ (Tie Breaker) 9/2015
So I've always had small freckles on my face. Well this morning while plucking 😩 I noticed a BIGS brown freckle on my chin. Like I would have noticed this sucker before but I haven't Cuz it's new! Do freckles appear during pregnancy? Is this some weird hormone thing or something? I don't mind it at all, just weird how it just appeared. 
I can't remember if I had a freckle there and it has gotten larger In diameter of this is a new spot all together. Any thoughts