A THIRD of under-21-year-olds go to their GP for contraceptive advice before losing their virginity, Southampton University research has found. Out of the 878 surveyed, 57 per cent had unprotected sex. Forty three per cent ofwomen said that the main reason for not requesting contraceptive advice was that they had not planned to have sex. A fifth did not ask because they were too embarrassed or worried that their parents would find out.