So I don't know if you will count this as bullying but here goes nothing

So when I was about 5 or 6 I was experimenting with my body and my girl cousin we were young at the age and she asked me "do you know what sex is" I said "no no I don't what is it?" She said that when 1 girl and 1 boy get on top of each other and start touching each other and after that she said if I wanted to try it so I said no because I thought it was a bad thing but than she said that she will only lock the door a little bit so I was convinced and we got ontop of each other and we'll just stayed like that but since we were so young we thought we had sex so we laughed and then when we went outside where my brother and my cousin where they asked us " what where you guys doing in the room" me and my cousin thought it was nothing bad so umm we told them and they started FUCKING BLACKMAILING US so we had to do what they say and still they do but keep in mind my cousin and brother are 5 years older than me so I can't fight back they would hit me punch me all type of things and if I ever told anyone about it they would kill me and also tell the whole family what me and my cousin did again I don't know if this counts as bullying but if you do upload this thank you