Was it right for my parents to keep their secret that my 2 siblings died at birth?

It's been a couple months since finding out my 2 siblings (an identical sister and fraternal brother) died at birth. They would've been my age by now.

My parents still had my two brothers; one is 4 years younger than me (20) and the other just turned 18 recently. Needless to say at times I find myself mourning for them. They were still my siblings after all. I imagine my parents must be sad every time it's my b-day.

I wished they had told me this earlier so I can properly mourn for them. Was it right for them to keep this a secret from me?

Was it right for my parents to keep their secret that my 2 siblings died at birth?
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