Pregnant and single

My partner and I broke things off two and a half weeks ago almost 3. And two days ago I found out I was pregnant. After my doctor saying I have pcos and his doctor saying it's nearly impossible for him to get anyone pregnant because of very very low sperm count. I don't know how to tell him. He asked to hang out tomorrow and I think that's the best time but I don't really want him to feel pressured that he has to try to be with me for the baby.....I actually don't think I want him involved. He has told me at the time of breaking up that he isn't ready for kids and never will be. So why burden him with something he didn't want....
Random rant