#3 help

Hello ladies, I’m having a hard time . I have two wonderful boys ages 3 and 1 . I have always wanted 3 children and I feel my family is not yet done. I would like to try for a 3rd child but my husband said he is done. His reasoning behind it is 1. He does not want to be out numbered and 2. He does not want to start all over. I get that I do but my feeling is 1. I don’t want to regret not having another child the rest of my life. 2. Would he really regret having a 3rd once it was here ... yes it will be stressful at times but the love that is gained will far out weight that stressful time . We have the money that’s not a problem. My older son keeps asking for another baby. I try to talk to my husband about how I feel and he just tells me nothings changed on his end. That he still only wants the two. So I try to compromise and say something like “how about we try for 4 months and if it happens it was meant to be and if not then at least he gave me the chance” but then he says something like” so I don’t want to but I’m supposed to do something I don’t want” but is it not the same way around for me ... I want one more and he is telling me no and I just have to live with that? We did talk about kids from the start and it was always know I wanted 2-3 and he was fine with that. Said he would be good with 2 but if I wanted three then we would see... but now it’s just a stand still me Yes him No... where do we go from here... I don’t want to live in regret . Also I should say I suffer from fertility problems and I only have one tube so I feel like me saying we try for only 4 months is a good compromise seeing as I would only have 2 true months to become pregnant because I ovulate ever other side each month. Please give me words of encouragement. Also no it’s not just because I want a girl I would be beyond happy with another boy. Thank girls