Pregnant with stds getting abortion

Hi so I’m pregnant by a guy I’ve been seeing for a year and a half...on top of finding out I was pregnant I also found out I have TWO STDS from him (he got it from a girl when we broke up for a month)😫 so I’m getting an abortion ...well now he’s like well I want to be there with you for the abortion & he wants to support me through the process & he doesn’t want me to go through it alone...honestly I don’t want him around because I’m disgusted. Should I let him come or stick to my guns & not allow him around during the process? I feel disgusted. I just don’t want him around i feel I can see him after I’m done with this traumatic experience