Quoting *Mrs. M.*:" Do you ever feel like people give really bad medical advice or shove their opinions at you that barely ... [snip!] ... kicks her other child's hand when she puts it on her belly... If I want your crazy opinions, I will ask. SIL included... ;)"
People have this bad habit of opening their mouths when no one's interested, you know? My SIL told me to pig out on whatever the hell I wanted when I was pregnant. Glad I didn't listen to her, the baby weight's been tough enough to start working off.
I get told how to dress my 17 month old DD, that she's not warm enough (bull, she lets you know when she's cold), that she's not eating enough (she eats like a horse all day long, sorry she doesn't pork out on crap food)...
A lot of anti-circumcision people will tell you that you're going to scar your baby for life and what not. It's a personal choice, and you do not deserve to get trashed for it. And yes, it is YOUR choice, you are the parent. You get to make these decisions. As for feeling the baby at 12 weeks, after the first pregnancy it's more likely, but for a first pregnancy it's much more difficult. It's more gas bubbles at that point of time.
Just hang in there, smile, nod, and let it go in one ear and out the other.