Your chances for admission in a government medical college through the all India quota are less, considering your marks and your category
You seem to have a fair chance for admission in a government college under the State quota. To know your chances please let me know the state you belong to/ domicile. You can also use the link given below.
Best of luck.
CAT Percentile Predictor
Predict your overall percentile now by using CAT 2019 Percentile Predictor tool