hey arvind 

you might not get govenrment meedical college in tamil nadu with 394 marks and belonging to BC category. previous year the minimum cut off of tamil nadu for bc category under state quota was 588 marks of rajah muthiahmedical college, annamalainagar.but there are chances that you get college in someother state. you can visit following link to predict college in some other state https://medicine.careers360.com/neet-college-predictor?icn=neet_clgpd_landing_page&ici=clevertap-sticky-web# 

goodluck