mine is almost 14 months old. Last winter it was easy to go for brisk walks...you know, sit her on her stroller and just push her and run up and down the corniche...she would be asleep within ten minutes. But now she insists in getting out of the pushchair and walking as well so is a little bit more difficult!.

Maybe the weith you put on during the second pregnancy takes a little bit longer to come off. Maybe you are holding onto some fat while you are still breastfeeding and it will come off once you wean your baby, I heard that happens often.

Anyways 3 kg in four months sounds fine,pregnancy weight always take longer to get rid of, just keep your diet and work outs and go for walks whenever you can and I'm sure you will slim down :)