Symptoms are gone - is that normal?

Tara
I got a positive test at 3 weeks 3 days and almost immediately started feeling exhausted. Today is 6 weeks and 2 days but I haven't felt tired since Saturday! I did feel nauseous a bit yesterday. 
I had a miscarriage in January and after I started bleeding my symptoms left as well...can anyone just tell me this has happened to them too? I think it's normal that symptoms would come and go...I just want to hear it again. Thanks!