I want a family

I'm 24 years old and feel like my life is as together as it can be. My SO and I have been together for 4 years known each other for 7. I want to start a family, I don't have a dream job other than to be a mom. I've told my SO what I want and how I feel but he doesn't want kids for a long time. Every holiday we go to I have to listen to jokes of how we aren't having kids until I'm 60 or how I'm eating for 2 (me and a tape worm; this made me cry). His side of the family already has 3 babies (all unplanned all parents 19 or younger) so I also have to hear about me just having baby fever and leave with hurting ovaries. It's hard for me watching these people with what I want by accident while everyone makes jokes about me. I don't have baby fever I want a family and at this point I feel like I'm praying for an my own accident. I just don't know how to cope with the holidays anymore if this is what I have to deal with and my SO doesn't seem to understand I don't find the jokes funny. I am genuinely worried I'm not going to have kids and I have a hard time being happy for the friends and family that are starting families. Thoughts?