Hello and welcome to the forum. If your profile name is your real name, I suggest you contact one of the moderators and ask them to change it, because this forum is fully public.
As to your question, if the marriage was entered into within Switzerland, then the Gemeinde already knows about it. if it was from outside Switzerland then, probably, the best place to ask is at your Gemeinde. They (or the immigration authorities) may need you to supply extra documentation if both spouses are not already residing in Switzerland or entitled to do so, and you now wish to apply for family reunification.
it is my real name but Daniel is my 2nd given name, thank you to point out.
Well the marriage happened outside of Switzerland but we both living in Switzerland but did not report back at that time the marriage. Since a baby is coming and to admit the baby require documents about civilstand, is there any consequences to change marital status in gemeinde after 2 years?
In that case, I recommend you do go ahead with getting your marriage registered now, ideally before the baby is born. Oh, and congratulations on becoming parents!