Feeling unsure

Jeni
I'm 7 weeks and 4 days today. I haven't had any bleeding or bad cramping, but all of a sudden I feel like I may not be pregnant anymore. My 8 week (and 1 day) ultrasound is on Friday and I may be having irrational anxiety about this pregnancy. It's been such a hard road. Is anyone else feeling this way? I feel pretty foolish.