Negative comments

I'm 5 weeks and I'm already exhausted, extreemly hungry, moody, and have cramps and awful back pains. And every once in a while I'll be out some where where there's people that already know about my news, and I'll get up and say I'm hungry or I'll get up with my hand on my back because it hurts so bad. And I'll hear someone say "wow she's just exaggerating" or "there's no way she already has symptoms, they're all in her head". Has anybody else had that issue or is it just me?