Worried

My boyfriends parents and my parents know where having sex, he's 28 and im 19. And bith of iur parents are ralking about grandchildren and I join in but always say in a couple years (weve been together 8 months) but hes asked do you want ro start trying. I told him the rruth that I want want to wait but he feels like hes being pressured from both of our parent's. What can I do to make him not feel pressured?