17 weeks twins

Hi all. Totally new to this group and love it so far.

I am 17 weeks with fraternal twins - 2 sacs.

I'm not really showing yet but I feel like I have 2 rocks (or pears I guess lol) under my gut.

Is this normal? I assume because they are still creating space and weight just because I don't have a stomach doesn't mean I can't feel them.

Still haven't felt kicks but just had Doppler yesterday and they are well and kicking!

Anyone want to share their experience changes up to 20 ish months please?

Also when did you guys start showing ?