Withholding affection

I have been in a relationship with my partner off and on for 13 years. We are currently living apart and want to reunite. In the meantime we are trying to conceive but here is the kicker. He is behaving in a very emotionally abusive way. He has decided that if he withholds sex (which we need to have in order to conceive) that I will move out of my house sooner so we can reunite. I moved back in with my folks to save and get away for a bit. He purchased a studio apartment and there is no space for myself and my son (his child as well) to live there. So he wants me to find an apartment and fix everything. In the interim I was taking the shots went to get inseminated and he backed out of having sex the next day. He says that I only want him for sex and that if he gives me sex then I will never move out. What do I do? Ready to give up and it hurts!