You know what, as long as you are healthy, bub is healthy & everything is going to plan I wouldn't worry. I hate how some doctors put so much emphasis on how much weight we gain or don't gain during pregnancy. We are all different & there's no right or wrong amount as long as bub is getting the nutrition s/he needs IMO. Overweight women tend to put on less, underweight women a lot more and some in between LOL!

As long as you're not eating junk food all day every day & having lots of fruit & veges I wouldn't even think about it. By the time you get to the end of your pregnancy you're carrying several kilos of baby, placenta, retained fluid & extra blood, all of which goes pretty quickly.