On and off symptoms

I want to be careful what I wish for but I feel like my symptoms come and go. I haven’t felt nauseous for a couple of days now. (I was getting it of an afternoon). I have definitely been having trouble staying asleep at night though. I had an ultrasound 2 days ago and they said I was probably around 5.5weeks. My next ultrasound is in 2 more weeks. I’m worried that maybe it’s not strong pregnancy :(