Index page of WordPress is not SSL secured – SEO

Runing vHost nginx on ubuntu. After I added a wordpress SEO friendly urls my main page (index) became non secured. However all other pages are

Index non secured.

All other pages are secured.

Can someone point me at the right direction? How do i get index page secured?

server {

    listen 80;

    listen [::]:80;

    listen 443 ssl;

    listen [::]:443 ssl;

    ssl on;
    ssl_certificate /etc/nginx/ssl-certs/MYSITE.com.crt;
    ssl_trusted_certificate /etc/nginx/ssl-certs/MYSITE.com.crt;
    ssl_certificate_key /etc/nginx/ssl-certs/MYSITE.com.key;
    ssl_prefer_server_ciphers on;

        server_name MYSITE.com www.MYSITE.com;

        root /var/www/MYSITE.com/public_html;
        index index.php index.html;
        autoindex on;
        include /etc/nginx/macros/macro;
        include /etc/nginx/snippets/phpmyadmin.conf;




                ####Please add below lines for SEO Friendly URLs
                location / {
                index index.php;
                try_files $uri $uri/ /index.php?q=$uri&$args;
        }

        location ~ .php$ {
 try_files $uri =404;
 fastcgi_split_path_info ^(.+.php)(/.+)$;
 fastcgi_pass unix:/var/run/php5-fpm.sock;
 fastcgi_index index.php;
 include fastcgi_params;
 }
}

After I added a wordpress SEO friendly urls my main page (index) became non secured. However all other pages are

Tried to clean cookies, tried on different PC, same thing everywhere.