Crashing Down

So I was hoping that things would start getting better, unfortunately no.
Since the pregnancy announcement my fiance's mom has been fairly mean to me. She's said some unforgivable things, and has been disrespectful, which I don't understand since she liked me before we announced we were pregnant. I've felt that I've had every right to shut the door on these people because of what they've done to me but I haven't. I see how important it is to my fiance so I try, and we have a compromise in place and a set plan for them to visit us and our son, and my fiance agreed to it, and has said that he supports me and understands, but lately he's been causing a lot of trouble and finally admitted it's because of the situation with his family, and complains that I've never tried and that it's been almost 2 years since the first incident that his mom did and that I need to suck it up and let it go. He also goes off about how she did try to apologize, a year after it happened. And I'm sorry but if it takes you a year to apologize and you were told the day after it happened what you had done, then too little too late, you didnt really want to apologize in the first place.
I want and wish more then anything that things were differently but I can't just shrug it off. These are people that HATE gays, they are full Jehovah witnesses and despise gays and lesbians, and when we announced the pregnancy to them my fiance had said that its a lot more common and modern now adays for people to have babies first then get married, and his mother looked at me and said "Just because gays and lesbians are common to doesn't make it right"
I was appalled that she would say that to me, I have nothing against homosexuals, my cousin is a lesbian, but I know how this woman feels about them and to have her put me and my unborn son on the same level was an unforgivable comment. Since then she's done other thoughtless stupid things, one for example is not coming to my baby shower when she was fully capable of doing so.

For my fiance I want this to work and get better, so I'm doing the best I can which is baby steps. I dont feel safe or comfortable around this woman anymore and how could I in my right mind put my son into a situation I don't feel safe with? I'd see myself as an unfit mother if I did that. Thats why we did the compromise. Sorten days for them to come visit in our home. I had already mentioned that in time it will et more frequent, that the times are flexible as are the days. But my fiance is causing trouble, says that the compromise is bullshit, that he never wanted to agree to it. He expects me to jump immediately to what they want and I just can't allow myself to do that without sacrifices my own morals.
I've always had the door open to these people, and I have been trying for a very long time. And right now this is the best I can do for them. I just wish my fiance understood how it feels for me, to be treated so poorly and yet be expected to give them whatever they want. I have reached out to make relationships, especially to his sister in law but how do you think it makes me feel when I send a heartfelt e-mail and really wanting to get together have my son play with his cousin, but have it go ignored?!? I hate how I'm being made out as the monster. I hate how my fiance says he supports me, and understands but is causing all this trouble. We've talked about it all again, and he's said he'll try, but that's all he can do is try. Right now I feel as though my little family is torn apart and my wedding will never happen..