I said I love you and she didn't say anything?

I told her a couple of days ago that I loved her and she really didn't say anything. She just laid there next to me. Her actions say that nothing is wrong at all. We are just like normal there, but she hasn't mentioned it since. I have been in relationships before and can say I have never felt this strongly about someone after such a short amount of time. We have been going out for about a month and a half. (I know that isn't very long) Our relationship just seems different than other ones I have had. We see each other and talk with each other for hours on end every single day. After I said I love you to her, nothing has seemed to change. Am I over thinking this? Should I be worried? Have I made a huge mistake in telling her I love her to soon?
I said I love you and she didn't say anything?
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