My a levels aren't very good

Im on a gap year at the moment after briefly trying uni in liverpool. I became ill there and didnt enjoy it so decided to leave to apply for a new uni and course for 2016. I got a B in history, a C in english lit and a D in psychology. I applied the other week for history and got rejected by nottingham trent as my grades were not enough. I was applying to unis in the east midlands but wasnt expecting to be rejected by trent as people with similar grades got in previous years. Nottingham trent was were i was set on going, now im not sure what to do as the entry requirements there wasnt that high