Don't worry. I'm in the same boat. I'm 16+4 and all my symptoms are gone for now too. And I'm also over weight. As long as your not bleeding, you really shouldn't worry. Not many people have miscarried without knowing about it. Just enjoy feeling normal for a but lol
Not necessarily because ur chubby that this is happening because I'm real petite and I'm 18 1/2 wks and unless anyone knows me, they xant tell I'm pregnant. I also don't feel pregnant lol its weird because I'll go to the park with my niece and nephew and want to do all the things I usually do with them but then I'm like "oh wait, can't! I'm pregnant" lol so don't worry too much . I'm also a first time mommy and I'm realizing that we can be a bit of worry freaks lol
You're symptoms can come and go.. its completely normal. Are if you're overweight you won't see a bump for a while.