Symptoms not as intense

I'm only 7 weeks and a couple of days... At this time last week I was so incredibly nauseous, bloated, and constipated. Now... I only have slight nausea at times, tender breasts, and slightly constipated. But I'm definitely not as bloated and have even lost weight. No cramping and no bleeding but I was so happy for the symptoms because it was a welcome sign of the pregnancy... Is it ok a normal for symptoms to fade or come and go?! I had an early scan about a week ago and saw the little heart beat and the doctor said that everything looked great and now I don't go back for another couple of weeks! I guess I just need some reassurance...