I suggest you to check whether the URLs are correctly showing in your wp-options table. If you dont know anything about the wordpress and its tables then I suggest you to contact your web hosting provider and ask them to provide you the steps to locate the wp-options table in your wordpress database.
Generally, most of the hosting providers use the phpmyadmin where you can locate the wp-options table. Check the URLs in this table and make corrections if any.
If you still face the problem then there is another table named as wp-users. Locate this table and click on pencil icon in phpmyadmin to edit the admin user row. Now you will find the option to change the password. Enter your desired password like "Password" and besides it, you will find the drop-down menu. Select "MD5" in it and click on "Go" button to save it.
Now you can login to your wordpress admin using the changed password.