Four weeks pregnant no symptoms

I found out I was pregnant at 3 weeks (I know so early). The week leading up to my positive pregnancy test I was so tired, nauseous, couldn’t even touch my boobs without wincing in pain and crampy. Now, the only thing that I am feeling is the slightest breast tenderness (that gets better throughout the day) and the occasional headache. I know the answer already that it’s fine and people don’t start feeling symptoms for the next few weeks, but just need some reassurance because I’m already an anxious person to begin with. I’ve been thinking about this 24/7 and worried that my body isn’t working the way it’s supposed to so just need to be talked off the ledge a bit 😭