Help please FTM.

Is it normal that I'm not feeling pregnant anymore at 10w4d? :( My first sonogram and real Dr. appt isn't until next Thursday. My belly isn't even getting bigger and I am so worried. FTM so idk how belly growth works. I'm pretty small so idk if that may be a cause? My sister had her mc at 10 weeks and that's all I think about right now. :/