VSCode intellisense with C++ headers

I have searched for this but I can't find anything. If it's dupe I will close my question without any problem. I have a c_cpp_properties.json configuration file in VSCODE

{
    "configurations": [
        {
            "name": "Mac",
            "includePath": [
                "/usr/include",
                "/usr/local/include",
                "${workspaceRoot}"
            ],
            "defines": [],
            "intelliSenseMode": "clang-x64",
            "browse": {
                "path": [
                    "/usr/include",
                    "/usr/local/include",
                    "${workspaceRoot}"
                ],
                "limitSymbolsToIncludedHeaders": true,
                "databaseFilename": ""
            }
        },
        {
            "name": "Linux",
            "includePath": [
                "/usr/include/x86_64-linux-gnu/c++/5",
                "/usr/include/c++/5",
                "/usr/local/include",
                "/usr/include/x86_64-linux-gnu",
                "/usr/include",
                "${workspaceRoot}"
            ],
            "defines": [],
            "intelliSenseMode": "clang-x64",
            "browse": {
                "path": [
                    "/usr/include/x86_64-linux-gnu/c++/5",
                    "/usr/include/c++/5",
                    "/usr/local/include",
                    "/usr/include/x86_64-linux-gnu",
                    "/usr/include",
                    "${workspaceRoot}"
                ],
                "limitSymbolsToIncludedHeaders": true,
                "databaseFilename": ""
            }
        },
        {
            "name": "Win32",
            "includePath": [
                "C:/Program Files (x86)/Microsoft Visual Studio 14.0/VC/include",
                "${workspaceRoot}"
            ],
            "defines": [
                "_DEBUG",
                "UNICODE"
            ],
            "intelliSenseMode": "msvc-x64",
            "browse": {
                "path": [
                    "C:/Program Files (x86)/Microsoft Visual Studio 14.0/VC/include/*",
                    "${workspaceRoot}"
                ],
                "limitSymbolsToIncludedHeaders": true,
                "databaseFilename": ""
            }
        }
    ],
    "version": 2
}

I'm developing in Ubuntu 16.04. The problem that I'm facing is that when I type in my .cpp files intellisense for headers are not working.

MyFooClass.h
#pragma once

#include <cstddef>
#include <fstream>
#include <string>

class MyFooClass
{
private:
    //My private fields

public:
    MyFooClass();
    virtual ~MyFooClass();
    bool MyFooFunction();
};

When I implement MyFooClass.cpp using

#include "MyFooClass.h"

Intellisense is not working for functions and data in .h It seems to me that this should be enabled in by default in my configuration but I dont know if I must add something new. Thank you very much.