Pregnancy symptoms fading??

I am currently 5w and I found out I was pregnant at 3w. For the first few days I had extreme nausea and dizziness. That went away luckily and for the last week my boobs have been really sore, I've been tired, and had some minor cramping. Now they seem to have gone away. My nipples are still a little bit tender but not so much. I am freaking out thinking something is wrong. Is this normal or should I be worried?