Weight gain!!

Is anyone else gaining a lot already??? My previous two pregnancies I’ve gained around 18kg.. (tall ish and usually around 62kg and luckily I’m able to lose the weight after pregnancies - so far..). This time I’m 16weeks and already gained nearly 5kg! 
Everyone else I talk to gains only a small amount or even lose weight in the first trimester!!! 
Anyone else a gainer?? It just sits around my hips and arms 😅