Heroku postgres database not connecting - node.js

Question

I'm playing around on Heroku and trying to link to a postgres DB. My app is linked directly to the github source code. When I run it locally with the Heroku DB credentials and with npm start it works, but not when it is deployed, I've got this error:
{"name":"SequelizeConnectionError","message":"password authentication failed for user \"riunhwzbjuwwgw\"","parent":
{"name":"error","length":103,"severity":"FATAL","code":"28P01","file":"auth.c","line":"285","routine":"auth_failed"},"original":
{"name":"error","length":103,"severity":"FATAL","code":"28P01","file":"auth.c","line":"285","routine":"auth_failed"}}
Any ideas at all?
Edit : here's the connection
var sequelize = new Sequelize(config.db.dbName, config.db.username, config.db.password, {
host: config.db.host,
dialect: config.db.dialect,
port: config.db.port,
dialectOptions: {
ssl: true
},
logging : false
});
and my variables
db: {
dbName: process.env.DBNAME,
username : process.env.DBUSER,
password : process.env.DBPASSWORD,
host : process.env.DBHOST,
dialect: "postgres",
port : 5432
}
Like I said, it works locally. The password is set like the DBUSER riunhwzbjuwwgw, could it be something those slashes? \"riunhwzbjuwwgw\"