What should i go for - MBBS or msc?.I have done B.sc life science and i am confused to what shud i opt . someone please suggest a way out.

I've done B.sc n got 73.3%. since i didnt filled forms for Msc entrance this year n i think i could not get admission to msc course for now and am thinking of dropping this year. But shud i do prepare for MBBS or Msc? if there is any other option instead of dropping a year please suggest?