my name is Adrian . i am from Romania . I am 22 years old. 3 weeks ago I had some kind of sexual contact with a girl . I had oral sex , but only between the labia . I dont put my tongie in vagina. All this oral sex i took 5 second. And after i put my finger with a little injury but very very very small on the nail. I did hiv test after 2 week and was negative. Can i have hiv?