7 wks, 2 days and no symptoms!!

Yani
I'm 7 weeks and 2 days according to this app! Since I haven't had my first pre-natal appointment yet,  (which is actually scheduled for tomorrow), but I'm a little worried since I haven't had any symptoms. 
I don't get sick, I'm eating as I did before, I'm not sleepy, but I do get severe cramping. 
 I called the doctor about before and he told me it was normal. 
Is anyone else pregnant, and have no symptoms?