I'm 5'11" and in a perfect world I think I would weigh 165 lbs or so, but I haven't weighed that for a long time, usually I am ~200lbs
Just wanted to put it in perspective, because I know 50-60 lbs on my frame is much more manageable that it might be for others! I also don't get morning sickness, so I gain the entire pregnancy, no losing/slow weight gain at the start.
My first pregnancy I started 195 lbs, I gained between 50-60 lbs (I stopped looking at 50 but it was close to the end). She came at 38 weeks and was 5lbs4oz. I'm guessing there was some IUGR at the end (she looked normal and fine all throughout) and that is why she bailed a little early because even for 38 weeks, she was small for gestational age. With BFing, it was all gone and then some by 4 months (maybe sooner, I wasn't really worried about it) and I was able to fit into all my pre-pregnancy clothes (except bras as I was still BFing) at 6 months.
With this pregnancy, I started at 225 lbs, at 26 weeks I weighed 255 lbs, so 31 lbs gained. I am pregnant with twins this time, so I'm actually really happy with that weight gain as it is right in line with what Dr. Barbara Luke recommends for a twin pregnancy and I'm aiming for 50lbs gained by the end, that gets harder as it goes as stomach gets very restricted so it is hard to eat enough. I really want to give my twins every chance to grow full-term size to hopefully avoid NICU. So far per U/S info (which just gets more and more unreliable for size) they have been a few weeks ahead growth-wise which is normal and good for twins as they tend to grow faster early on and then slow down a bit at the end. I plan to BF again so I am hopeful the pounds will melt right off again like last time.
For my first pregnancy, the recommendation was to gain 15 to 25lbs for my BMI. Yeah, not even close!
For this pregnancy, going by Dr. Barbara Luke I should gain 25 to 50 lbs for my BMI. I think I will probably be close to 50 lbs based on weight gain so far, but if I gain over that I'm not going to worry about it as long as it is steady as my body definitely likes to store lots of fat for BFing!