I'll go first:
I have a SIL from the deep south who never finished going through school and when it comes to smarts or common sense, she just doesn't have all of her ducks in a row (very nice girl though). When she got pregnant with her 1st child, no one lived near her, so we don't know how that went. BUT, with her 2nd child, she was living right around the corner.
I knew she had been smoking heavily (warning: very judgemental poster here --- having had a child pass away, I can't help it, but I am trying to work on it

), which is bad in itself. Then she tells me she has to go to the high-risk DR (who I am all too familiar with) and asks me to take her. I stand there and listen to the DR tell her that the baby is in danger, not developing right, and that she needs to change her lifestyle immediately. Most of us would be flipping out.
Later that week, I find out that she told everyone, including her DH, that everything was fine and that she just needed to cut back a little on her smoking. WHAT?!?

So, after informing everyone of the truth, they let me know that she has been drinking heavily throughout the pregnancy. Are you kidding me?!?
I am a rule follower when it comes to pregnancy. I can't help it. I lost a child. I am more strict than most first-time pregnant women. I had such a hard time with this, still do if you can't tell. To this day, I worry about those two kids and that they will have developmental delays.
It's 9 months...how hard is it to give something up for 9 months?
Here's something I thought was funny (not really): other SIL is having problems conceiving and topic of surrogacy came up. SIL (from above) actually volunteered to carry a baby for her!