My boyfriend doesn't want children

My boyfriend of 5 years told me before Christmas that he doesn't want children. He has Cystic Fibrosis so if we were to have kids we would have to go through IVF which I was willing to go through. He doesn't think he has a future due to his CF and doesn't want to leave me a single mother. I completely understand these insecurities but we went out last weekend for his birthday and he got really angry that I was talking to his mate and wouldn't speak to me. He said the next day that he felt that I was flirting with his mate and felt insecure that I would end up cheating on him with someone I could have children with. I love him to bits but now I've got to decide whether to stay with him but never have children or to split up with someone I love so I can have children with someone else. I've come to my parents house so I can think and give myself some space but I really don't know what to do. Since I've got to my parents my family has told me that they think he can and has been controlling and manipulative over me. I moved 90miles away from my family and friends to be with him. This decision is tearing me apart and I need some unbiased advice.

First to address what your family thinks. If they are anything like mine they are like magnets to problems and tend to feed the fire so to speak. Examine your relationship close, do not look for problems but look for triggers. Are you allowed your own friends? Does he question every where you go? If you want something and he does not does he insist that you give it up? Not talking about the children issue. Does he have the final say in everything or do you both make decisions? Is your place decorated for both or you or for him and you have taken on what he likes? Once you have done this and figured out if he is controling then you can address the rest. As for your family I would explain to them that you love them and greatly appreciate their support but you need just that their support, you do not need them throwing more wood on the fire. This is your life and you have to live with the decisions that you make. remember that f you do decide to stay with him you will have to live with all the negative things you tell your family now for the rest of your life. If you want them to accept him do not tell them all of your problems or complaints. Just that you need time to think and evaluate your current situation.