worrisome symptoms?

Gabby
Hi all! I'm pregnant with twins, 7weeks +3, and have had symptoms on and off.  This is my first pregnancy, so I don't know what's normal and not normal? I was sick, really sick, from morning to evening for week 6 of my pregnancy, then 2 days ago I woke up feeling good, then later that day sick for a few hours, and then again woke up this morning feeling good and then only sick for a few hours and now I feel great.  And I don't feel as exhausted the last 2 nights when Ive gone to bed.  So I feel almost like my symptoms are tapering off?!? Is it normal to feel good some days and then horrible the next? I'm so terrified this means bad news...