Expecting 4th kid

I took a test yesterday and just found I’m expecting my 4th and final kid. My youngest is 18 months. I really haven’t had any symptoms besides bloating and cramping. I do remember feeling pregnant pretty early on with my last 2 and i was 17 with my 1st so i don’t really remember. So is it normal to not really have any symptoms? And also not to actually “feel” pregnant?