Should I be worried if symtoms go away? Or am I just lucky?

Bianca • Baby is due in October 2016
I'm 7 weeks and my boobs have stopped hurting and my nausea went away. I also have most of my energy back since two days ago and cramping has stopped. I'm really confused and a little bit worried that something might be wrong as I also started losing symtoms last year when we had the silent miscarriage. We had a very strong heart beat and a hCG level of over 20 000 a little more than a week ago. My next appointment is the 17th of March only. Am I just lucky or should I be worried... at the moment, besides crying this morning over a stupid thing, I don't feel pregnant at all... anybody remotely in the same boat or have advise?