So something weird happened the other night..

Last night I was craving milk soooooo bad.. I had a dream that I was drinking a glass of milk and I actually woke up at 5am to drink some I was so surprised this has never happened before, I mean I like milk but I have never had that strong of a craving that I had to get up at 5am to drink some! My period was supposed to start last week, I've taken tests but they have been negative. I did some research and read that some women crave milk during early pregnancy. Has anyone else experienced this?