Weight gain? Too much?

Laura
I'm worried I'm putting too much weight on compared to other women, I have searched the posts on here to see how much weight everyone has put on during their pregnancy. When I was 7 weeks at my booking in appointment I weighed 58.kg (127 lb) and I weighted myself today at 21+4 and I weigh 68kg (149 lb). I am tall, around 5.10, and I am very happy with how my body looks, however just concerned that I've put 22lb on in 21 weeks! 
Please tell me this isn't something to worry about!