Hi folks! I have a few questions about pregnancy weight gain. For those who don't know me, I've been maintaining a ~50lb loss for seven years and am currently 18w5d pregnant with twins. Here are my questions/issues.
1) My doctor told me that I need to gain at least 40lbs during this pregnancy since it's twins, and he said, "It's not possible to gain too much weight." I'm currently up ~19lbs as of this morning (depending what you consider my start weight). I read that for twin pregnancies, you should gain most of your weight early, including at least 24lbs by 24 weeks. Am I on track? I feel like I've been gaining a lot of weight each week the past couple weeks, like 2-3lbs. If I keep up at this rate I'll overshoot the 40lb goal if I make it to 36 weeks, and despite what the doctor said I'm pretty sure it's possible to gain too much weight. Will the weight gain slow down?
2) Relatedly, how do I know that my weight gain is going to the right place? When I look in the mirror it's mostly belly and boobs, but this past week I've noticed that my thighs and arms seem chubbier too. Is that okay? Or does that mean I'm gaining too much too fast?
3) If I need to slow down the weight gain, how the heck do I do it? I mean, I know how to cut calories and all, I've lost before and maintained for years, but my doctor says I need 175g of protein per day to help prevent complications because I'm having monochorionic twins. I have no idea how to eat that much protein without also eating a lot of calories, and I'm so hungry all the time that it's not like I'm stuffing myself.
4) This question is specific to maintainers who've been pregnant -- how do you cope with watching that number on the scale go up and up and up when you've worked for so hard for so long to keep it steady? I'm pushing up close to 160lbs right now and all I can think about is how fat I was when I weighed 160 before, and how when I get to my 40lb pregnancy gain I'll be almost right back where I started.

I have been through THREE pregnancies after maintenance - it IS possible to get back! - and I'm 3 months postpartum with the last one (40lb gain, not twins, just big babies). You gain healthy weight for your babies and then re-use your same losing principles with learned maintenance habits after. Nursing (which I did not do before) has helped me lose faster once I established my supply and got into a deficit (I'm at 2000 calories and losing 2lbs a week still).
I feel a lot better knowing that it's okay to gain weight in the rest of my body and that I'm not gaining too fast. I am trying to eat pretty clean, especially now that I'm past the morning sickness. It's been a little bit of a mental struggle because my #1 nutrition goal right now is hitting my protein target, which means I've been eating a whole lot of meat and cheese, where my normal maintenance diet was largely veggies and only a little meat and cheese.
I have grandkids now!
. Or, I could feed one and have the other laying next to me on the seat of the chair.
I was also around 135 pre-pregnancy. At least, 135 is my maintenance weight -- I was right around 137-138 when I got the news. As of today I'm at 157. Are public pools okay to go to when you're pregnant? I've thought about going swimming at the indoor pool I used to go to but I'm afraid of catching a virus or something.