I had no sex previously. but today i have a slight spot and light period. what does this mean? it lasted only an afternoon.

Virgin?: If what you are telling me is that you had spotting after your first sexual encounter, this is very common and nothing to worry about. You do need to be sure that you are protected against pregnancy unless you are ready to have a baby and using condoms to decrease the risk of STDs unless you are in a mutually monogamous relationship and certain that he does not have anything. Good luck.

Virgin?: I am not sure if you are a virgin or not? If not sexually active, this can be a simple hormonal fluctuation in your cycle and is considered normal. If sexually active for the first time,I agree that you need sexual protection and scant bleeding would not abnormal.