Hi,

For a govt college, one must secure a score above 550. For ST 2018 cut off was 599-118. Anything above 118 was considered qualified but govt college is given to students whose score is above 500 or even above 550. So I will suggest you to start preparing again and don't waste time waiting for the result. I know it is bit heart breaking for now but try to put all this sad energy  in your efforts and get a good score so that you could get into your dream college. 

Good luck and keep calm