Hello, 

As per your question, if your rank is more than 1 lakh than chances are really less even if you belong from obc category . If you belong from some special reservation category than within 2 lakh rank you have chances, but if your rank is approx 5-6 lakh, then you havr almost nil chances to get bds in any government college whatever reservation you might have.it also depends on your state and students and their vacancy. 

If you cant get there, try for private bds if you can afford, or try for some other medical courses like bams,bhums, vetenary, unani,bpharm etc only if you have interest.

You can try again next year for mbbs/bds in government college if you can score more well and have a good rank under 50k.

Good luck