symptoms??

So I am exactly 6 weeks pregnant today but I have not had one symptom... why is this?? When should I expect some symptoms? It's making me doubt myself but I have done 5 tests and 3 clear blue digital and 2 cheap ones which popped up right away.. I always thought symptoms started right away but I didn't even know I was pregnant until tested for late period. Has anyone else been like this.. 😀