stopped feeling pregnant?

Samantha
Hi all, I'm 6w5d and all my pregnancy symptoms somehow stopped. Soreness in boobs is less, way fewer or no cramps, and never had any nausea. Has this happened to anyone and who still had a successful pregnancy? My first ultrasound isn't until March 27 when I'm 9 weeks along and I'm scared something has gone wrong. No spotting at all though and all the pregnancy tests I've taken have been strong positives.