I hate sex and don't know what to do about it. Any advice?

I'm in my mid 30's and hate sex to the point that I can't see myself ever having a long term relationship because I know it is an important part. Some of what I experience is: pain during penetration......it feels like my organs are being pushed upwards with each thrust, I can't wait for it to be over, extreme detachment of emotions from my partner and anger towards them after it's over and reluctance to want to have sex in the future. All of the foreplay is great until he starts getting erect and starting to enter me. I feel like it's a chore that I want to be over. I've felt like this every time I've had sex. The only reason I've had sex, the few times that I've had it, was because my partner wanted it and I wanted to please them. I go into it with a positive mind, hoping that it will be different, but it's not. It makes me very depressed to think that I will never be able to satisfy a man in this way and that he'll eventually leave me for someone who doesn't have my issue. So what should I do? Also, I'm always naturally very wet, have lots of foreplay, never been molested, raped, etc.