I get scared when i see my uncle

I have always been very close with my uncle.
When I was younger he would take me out and look after me when my parents were away. I love him like a brother but recently i've been getting very peculiar feelings. I wanted to use this website as a place where I won't be judged so please wait before throwing insults at me.

Over the past year I have visualized my uncle in a sexual manner. It started off by me having wet dreams about him and always thinking about him when I was masturbating. On a side note, I was worried that this was to do with something he had done/we had experienced when I was younger?

Anyway, when I was young we always used to go fishing on the creek nearby my family home. We used to have such fun and he was the one who taught me how to fish. I used to use a spear gun (under his supervision!) to catch dace. When I have been imagining my uncle ramming me, I seem to always think about the spear gun.

As such, everytime I see him I am worried that he will enter me with a spear. You see, my uncle is a very experienced hunter and fisher and I am just so concerned that when I'm not expecting it he will use his favourite spear from his collection to enter me from behind. That is not to say I wouldn't enjoy it, because I most probably would! However, this would be my first time with a man and I would prefer he used his penis rather than a spear.

What do I do to get over this fear of my uncle and the way my breath shortens and I get aroused every time I visit him?

Is this normal - does anyone else feel this way about a close family member? I know penetration is normal, just not with a fishing spear!
Thanks!