Soft belly at 18 weeks pregnant

NS

I’m 18 weeks pregnant with my second, I’m barely showing and my belly did not harden. It sometimes feels hard at night, but not everyday. I remember with my first I couldn’t stand regular jeans as early as 12-13 weeks as my belly had already started to harden.

I can feel my baby kicks, but very low in the pelvis.

Anyone else? Is this normal?