Morning sickness

Kate
I'm 7 weeks 4 days and for the past week my nausea has been awful. It's been waking me up at 6am and lasting all morning. Today I woke up at 9am and have no nausea! I know I should think myself lucky but I can't help but think there's something wrong now. Anyone else have this? I have my first midwife apt tomorrow but I think it's just a health check, no ultrasound or anything