Is it normal: for every abnormal thing to turn me on?

I feel like theres something wrong with me. Ive been called crazy,psycho bitch my whole life. Its like everything that shouldnt turn me on does. Like knives,blood,murder,bondage,s&m. Ive tried not to like it because my boyfriend isnt really into it, i mean i can get him to choke me during sex but thats about it. I dont want to have to be superficial to get people to like me. i dont want to pretend to be someone im not just to have friends. I literally have no one but my fiance,we've been together 4 yrs because he doesnt judge me. If i see someone in pain I get wet,thats why i really dont like people talking to me about deaths or funerals or how their loved ones died because honestly i cant hold back my laughter and then im all playful and extremely turned on and i dont know how to fix that?Im just looking for thrill and excitement. my fiance has let me taste his blood befor also but he wont go any farther than choking and that,sometimes i dont even get a taste of blood. It's strange but i crave it sometimes,the taste and how it makes everything sexier drenched in it. I just wanted some kind of advice about what i should do? please try not to leave rude comments i know this will probably sound strange to alot of people but like i said ive been called crazy my whole life,looking for a someone that would understand.