According to previous years cut off analysis your rank will  be between 14600-22000,the last rank to get admission in CMC Ludhiana under Open Category (All India) seats was AIR 20,249 with 503 marks so since you are on borderline there are very less chances of getting into cmc ludhiana , as it is a highly reputed medical college with limited no of seats for non-christian categories.

Also for more analysis colleges you can get with this rank you can use following toolhttps://medicine.careers360.com/neet-college-predictor