Is this normal?

For the last couple of days I haven't been feeling as if I'm pregnant as weirdness that my sound. My stomach went from looking and feeling bumpy to looking and feeling flatter. My breast don't feel tender or full & I also was feeling flutters but not in the last few days. I have an appointment on the 4th but my mind can't help but run. Of course I went ahead and searched it up and I read about 'Missed miscarriages' I don't want to think like that but now I'm worried. Has anyone else felt this way and was fine?