losing virginity
 
'How do I know if I'm ready to lose my virginity to my boyfriend?'
 
Read on.

unprotected sex
 
'I had unprotected sex and am worried I could have caught something.'
 
Read on.

painful sex
 
'What can I do to make penetration more comfortable?'
 
Read on.

HIV and blood donors
 
'When you give blood do they check for AIDS?'
 
Read on.