My son is my only chance to have grandkids

I have one son who is an only child. He just turned 19. I did want more kids, but sadly I ended up having unexpected infertility. All I really have to look forward is grandchildren. He has a girlfriend and he was planning on seeing her and I told him to make sure he has protection and we don't want grandkids before he's done with college and he said "Ew". I'm like what do you mean ew and he said "I fucking hate kids. I'm not having kids". I go "Dont you want me to be a grandmother ". He says "No"😑. I tried to explain how he will change his mind and how amazing having kids are and he just said while on his phone not even looking at me "Fuck them kids". And told me if I want a grandchild so much he can have one and I can raise his bastard, otherwise he's not having kids. Do you think he'll change his mind? Maybe I should actually have him around more kids so he will like them more.