Aiyoo 2.4kg at 36 weeks is memang a bit on the lighter side lah, biasanya babies at that gestation dah around 2.6-2.8kg ke lebih. One of my mum friends went through something similar and her doctor did extra scans to check the baby's growth, so I'd say best you check with your gynae ASAP to make sure baby's developing okay and there's nothing we need to monitor. Jangan worry sangat though, some babies just grow slower in the womb but turn out fine, but definitely get it checked out to be safe!