My DD has been pretty easy going until the past 2 days. She is a gassy baby and has trouble doing #2, but usually is eased with some exercise and some drops or karo syrup. Now suddenly she is constantly crying even when fed and dry and seems to be fighting sleep. She has also stopped finishing her bottle leaving between 1/2 and a full ounce, but after a few hours acts like she's starving (i.e. smacking her lips and sucking the paci like crazy). This coming from a little girl who has always finished her bottles and fell right to sleep. During this morning's nap she is constantly grumbling and wiggling all over her pack n play. I've heard of a 6 week growth spurt. Could this be it or are we blessed with colic?