Hi Gary. Welcome!

Yes. All electromagnetic waves and gravity (whatever it is, gravitons or whatever) have had only 13.7 billion yrs to reach us. That not only limits the observable universe to a radius 13.7 billion lt.yrs., but also means that gravity can reach us only if it originated within that radius.

It's fascinating and bizarre that we can't see the cosmos as it actually is 'now', and are not affected in any way by the vast majority of it. For all practical purposes, it seems that nothing exists beyond the observable sphere, even though theory states quite firmly that it does.

"Time is what prevents everything from happening at once" - John Wheeler