Is this normal?

[HelenJ]

I gained almost a kilo just this week(and didn't eat more than usual) is this normal? I am already 1 kilo over what I wanted to weigh in the end. I am so scared that I will end up gaining so much and being super fat at the end (I am only 31 weeks now) perhaps it is just a growth spurt? Hs anyone else had this too?

Thanks xxx