No symptoms?

I'm just wondering, is it normal not to feel any symptoms at almost 5 weeks? I only have a little bloating, but even then I'm not sure if I even have that.. I will say that I have been having mild cramping since a little before my period was suppose to start (july 15th) and it makes me nervous and I always think the worse... I want to enjoy my pregnancy, but it's so hard to when I worry like this everyday all day. My OB appointment isnt until August 11th and wait is soooo excruciating!