symptoms

I am 7 weeks today and I hardly have any pregnancy symptoms. I have a 1.5 year old son and when I was pregnant with him I had naseua like crazy the first trimester and cravins galore. All I have been experiencing with baby #2 so far is fatigue (but I'm always tired as it is pregnant or not!) frequent urination (again, I always pee a lot pregnant or not) occasional back pain and just a couple cravings randomly. Not really feeling any other physical symptoms. My husband does say I am Moody on certain days. So I guess my hormones are affecting my mood and emotions. Other than that... nothin! :( is this normal???