Service dog?

Courtney β€’ Married πŸ‘°πŸ’ Pregnant with my 🌈 baby.
Hello ladies, I suffer from PTSD and was thinking about getting a service dog. How do I get one? How much does it cost ect. I live in a government own apartment complex and one rule is that we aren't aloud to have dogs on the property period but I know that if I have a service dog that they have to let me keep it.