I only put on 5.5kgs with DD1 and only 2kgs with DD2. Pregnancy was a great "diet" for me!! Try not to worry. Both my babies thrived in the womb and were born smack on the normal range.

As for movements, everybody and every pregnancy is different. I felt DD1 very early (probably about 15 weeks). I was concerned I wasn't feeling DD2 by 20 weeks (especially when you supposedly feel subsequently babies more quickly). Turned out I had an anterior placenta so that was muffling a lot of movement. She sure made up for it later on in my pregnancy though!!