Carrying low?

Hey all so I just turned 20 weeks today and I thought I would get a rounded belly but she seems to be carrying low and the lower half is just growing instead of the upper part along with it. Glow said I should be able to start feeling her kick up near my ribs but the farthest Iv felt was just level with my belly button and the rest s always low. Here's my weekly bumpdate pictures which I just took this morning but should I be concerned she's so low or is this normal??