Still don't feel real at all!

I'm currently 31+5weeks and literally barely feel pregnant. The only time I do is when I've walked far I get so tired easy. I don't really have a bump. He doesn't move an awful lot on days but when he does he really does go for it!! I've had terrible heart burn and only had Braxton hicks a few times. Is this normal?? Midwife says all is fine and everything was okay at my 30 week growth scan. Just wondering if anybody else is feeling the same.