it is highly unlikely that you had true sexual intercourse. many five -year old children engage in sexual "play" mostly imitating adults that they may have observed. they like to "play doctor" and look at each others different parts but sexual intercourse? not when both children are just five.
can 5 year olds have sexual intercourse. my mother has told me that when i was 5 years old (i am a male now 73) that the girl tht i played with who lived next door to us (she was also 5 years old and is now 73) that she wanted me to have sexual intercourse with her (except she used the f word now i had no clue as to what either ment when i was 5) i can recall her making tis statement while both of us had no cloths on and i was on top of her "are you trying to urinate inside of me" is it possible that we had intercourse?