"If you have to ask..."
Yes, you got rocked.
Getting kicked in the head rocks literally everyone, regardless of chin.
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Getting rocked isn't always even unpleasant or painful. If you think you mighta then you definitely did.
If you think you didn't, then you still probably did.
If you KNOW you didn't, there's still a somewhat decent chance you did.
Chin is determined more by light punches than kicks. Kicks rock everyone.
You can't build up your chin, you only can lose pieces of it with every hit so be careful to guard it as best you can for every spar, every fight. Don't worry, you'll find out how good your chin is regardless of how excellent your defense is, along the way, sooner than later.
(edit) - you can't build up your given chin but you can cushion it somewhat with a strengthened neck [acts kinda like shock absorber/suspension system] and especially good technical defense.