SSS miscarriage benefit claim

Problem/Goal: Company can't file miscarriage due to not being able to file Mat Notification Form

Context: I found out I was pregnant when I miscarried. Basically, hindi ko alam na pregnant ako, so hindi ko na notify yung employer ko para makapag-file ng notification form sa SSS. Ngayon, I have the documents, ultrasound showing remains of conception, blood test showing I was pregnant, PT showing 2 lines and I can have another ultrasound as proof na complete na yung miscarriage. Hindi ako niraspa kasi dinaan sa medication yung naiwang tissue. Ngayon, dahil hindi makapag-file ng Notification Form yung employer, they said they cant file a claim.

Pwede ko bang itry i-claim yun by myself and explaining why I wasn't able to file the the Mat Notification Form?

Do you know what I should do? Help.