Is this normal?

Laura
I started the pill December 1st. It's lo loestrin fe, pretty low dose, though I don't know much about birth control to compare it to. 
My cycle was typically 32 days, but never consistent. Even skipped a month a few times. 
Since the pill, my cycle is more like 42 days. 
Finally spotted my underwear a good bit yesterday after some cramps, so "yay, finally on my period" (a week late). Then today there was only like a drop of blood on my pad. 
So my question is... is this normal? I know the pill basically prevents an egg from releasing. But should my period be THIS light? Or is my body still getting used to the pill? Was that just spotting and I should expect more soon? I'm all sorts of confused. 
Started the pill to have lighter, more regular periods! Arg. 

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