In SSMS you have the “schema changes history” report. You can have the same (or even more) details from T-SQL. You can use the t-sql statement below in order find schema changes the last day, in a particular database.
SELECT o.name AS OBJECT_NAME, o.type_desc, o.create_date, o.modify_date, s.name AS schema_name FROM sys.all_objects o LEFT OUTER JOIN sys.schemas s ON ( o.schema_id = s.schema_id) WHERE create_date > ( GETDATE() - 1) or modify_date > ( GETDATE() - 1);