We were a lot more terrified about everything before we conceived this baby, even though we still don't know much. There simply aren't enough things to compare to, so we'll know more when our little boy is born. Hopefully he won't be affected by any shape or form from that genetic spectrum.
As for the weight, I started out with a BMI of 35, but nobody cared, as more than half of my starting weight was muscle and I was perfectly healthy (I'm pretty weird, overall, my weight doesn't really make that much sense - with a BMI of 35, I wear 14-16 bottoms (US sizes) and M tops on average, unless they're button ups, which won't fit my boobs usually). I was the one who wanted to restrict my gain, but they didn't let me. It looks like I'm around 7 kilos in the plus now (the past two weeks, I've gained about a kilo and a half, which I consider a ton) and that's, in fact, below average. The doctors are fine with it, the baby is healthy and growing fine, I don't have GD or there's actually no risk, etc. I still hate seeing any increases, at all. So I guess, for now, I just hope I'll lose all of it when I go in to deliver our little guy.
It's just that I've worked so hard the past years to ignore any numbers going up, even when it's because/for our little baby.