Name struggle? This isn’t fair to me.. how to handle it?

I’m wondering if anyone has dealt with something similar and can give me some advice. Here’s the backstory, before my boyfriend and I even thought about having children we discussed baby names. He has always had his heart set on naming his son after him so it would really be the third.

 I made it clear from that point forward that I will not give my baby his name (I’m sorry, it’s a hideous name). The time comes when he wants to start trying for a baby and I bring it up again about the name because this is very serious and I make it very clear from the beginning that I am not naming my son that... he says OK he understands. So before we even got pregnant we had an agreement. 

I am now 30 weeks pregnant and we have a name picked out that we both love. Amongst other people in his family giving me a hard time throughout this pregnancy with the name, he tells me the other night that he can’t get past it and that even his dad said last weekend that he was upset that I won’t name our son after him... I was so shocked because I thought that this was settled because we agreed on a name. 

My boyfriend will not compromise at all... he wants his full name or not at all so unfortunately we have to go with the second option. I offered to give the baby’s middle name his first name, I offered to hyphenate it... to have his full name but a different first name in front... annnnd nothing! I feel hurt right now that I’m 30 weeks pregnant and his dad brought this up to him after his dad knows how upset I was when other family members did this earlier in my pregnancy because my boyfriend and I had a very serious talk before trying and they don’t know what we went through. I feel like my boyfriend told me that in a way to make me feel guilty. I’m sad that this keeps getting brought up and I’m sad that there’s bad energy surrounding my baby now. My baby shower is in a few weeks and I’m honestly dreading it because of his family