Depends on the year you were born. If you were born in 1948, you have to be 66 to receive full SS/Medicare benefits, unless you were on SS/Medicare disability...then it just rolls over to regular SS/Medicare when you turn 66. I went through that at 66, wondered why it did not occur at 65 as was the former norm. They are shooting for age 70 or higher. Hoping more of us will die off sooner and they get to keep the money we paid in.
I'm not sure what you situation was, but Medicare starts at age 65 for most people:
[Medicare] Eligibility & Premium Calculator
Social Security eligibility is separate, and the age of "full benefit" has been increasing 2 months for every year one is born after 1938, until 1960: