Struggling with weight...

I'm now 25 weeks...im wondering how you feel about weight gain. I'm already 20lb heavier than before pregnancy. Is this normal? I have ready all about how much you should gain...etc. I am a fairly small person to begin with. I'm just wondering if yall struggle with the numbers and what is ok. I'd love to see pics and hear what your thoughts are on weight gain. How much do you anticipate gaining total. this is my second little girl but I was much more fit and smaller with her than I am now...so it's all feeling different.