Hello, 

With a score of 502 you have a chance of admission in government as well as private medical colleges through the state quota. The cut off marks for All India Quota was more than 550 marks in 2018. The cut off marks can increase or decrease in 2019 depending upon the tie breaking criteria, percentile score, etc. Therefore, you have a better chance of admission through state quota in private or government Medical Colleges. 

Hope this helps.

Good Luck.