I just need something to show my birthday and year I was born. There is a mistake on my birthcertificate I found out when my mother died. I need 2 documents for proof of my age before I was 10 years old.

There may be 2 that exist. Or more depending on what they will accept as record.

1) School record from when you first enrolled.

2) Doctors records from when you got your shots.

3) depending on your current age you should have received a Social Security card. That also would have your date of birth record.

Church baptism records, school records, medical records.

Also, you said birth certificate you found when mom died?
Have you checked with the government to be sure that it has not already been fixed. Also would not the one mom had been the one she used for school and more.

What is the difference?