Wow, mamas...sorry to hear I'm not alone!! What is WITH people, especially family members, being so negative and judgmental?! We wanted to wait a while to tell people, but I started showing so fast and the kids got wise because with morning sickness I couldn't drink coffee anymore (they know I normally LOVE me some coffee in the mornings!), so we had to tell the kids...who were SUPER excited to have another sibling! Then we figured we should tell our moms, since the kids won't keep quiet.
My mom has been negative EVERY time, and she was shocked but finally just said "Ooohh...I hope you know what you're doing." My MIL was by far the worst - she freaked out when DH told her, and said I should just get an abortion. He told her that actually, we were really happy about it, and she could go f--- herself...then hung up the phone. She's since come to her senses, but talk about awkward! Then DH's brother found out Monday...DH hadn't told him (expecting a similar reaction), and when he came by to drop off Christmas gifts, DD spilled the beans in her cute almost 3yo voice: "Mommy has a baby in her belly! Mmm-hmm!" as she smiled and nodded emphatically. He looked like someone gut-punched him! Then DH heard about it from him Christmas day, big lecture and gloom & doom scenarios. My stepdad wasn't much better - we got them a gift certificate to a really nice restaurant for Christmas, and DH said something about us not getting to go out much (mostly b/c he works so much as a restaurant general manager, and I work there weekends so we don't get date nights)...my stepdad said, "Yeah and you'll probably never get to go out again!"
OTOH, our friends, co workers, even parents of the kids' friends, have all been SO excited for us. One of our neighbors (whom I see at the school bus stop) is having her 4th any day now, and she was thrilled - high-fived me saying "Yay! Now we're both in the 4 club!!" Another mom in DS2's preschool class said "Wow, 4 kids? You're such a super mom!" Which was so sweet. :) Just wish our family would be that sweet.