Hello, 

539 is a good score in NEET. If I look at the last year's cut off marks then you have chances of getting admission in government Medical College in West Bengal for MBBS

Following are some colleges with their cut off for 2018 under General Category, State Quota 

1. Bankura Sammilani Medical College cut off 487.

2. Burdwan Medical College, cut off 500.

3. Calcutta national government Medical College, cut off 509.

4. Medical college, cut off 563.

5. Nil Ratan Sirkar medical college and hospital, cut off 533. 

For more information about last year's cut off for West Bengal Medical colleges click on the following link.

https://medicine.careers360.com/articles/neet-cutoff-west-bengal

Unfortunately, if you do not get admission for MBBS, you can try for other courses like BDS, BHMS, etc. You can also take a drop year and prepare better for NEET 2020. 

However, looking at the last year's cut off, I think you will get admission in West Bengal Medical colleges in general category quota.

Good Luck.