Hi,
my DS had a dummy till he was old enough to find his fingers, he then spat the dummy and gained a thumb! So now the drama i have is getting rid of the thumb sucking. Its not as easy as chucking it in the bin as it is attached to him. But i have noticed he has a little lisp because he sucks his thumb ALL the time. I didnt have a dummy although i do need braces (my teeth are crooked) but i sucked my fingers, like neverplan said if she is 2 months and settles i wouldnt worry.
Goodluck..