Should I go? Am I being selfish?

Next week is my husband's cousin's daughter's first birthday. We have been TTC for almost three years and had an early MC within the first year.

I don't necessarily want to go to the birthday party. Things like this are hard for me, especially considering it's for his cousin's daughter.

When his cousin was pregnant, she would always come up to me at family gatherings and complain about her pregnancy. She would make the rounds and make good conversation with everyone, then come over to me and complain (peeing constantly, back ache, etc). She would do this multiple times at every event. Then once she had her baby, she would come to me to complain about motherhood and having a baby in the house (up all night, the crying, typical parenting stuff). Again, she would have real conversations with everyone else, and then only complain to me. Don't get me wrong, I completely understand that pregnancy and parenting is hard, and she has everu right to complain, but I am bothered that she only seaked me out to complain to. It's not what I want to hear after going through everything I have gone through.

We really only see them at holidays and other family events, so we are not overly close, and her daughter has absolutely no clue who I am. I don't feel as though it would be a big deal for me to miss this event and protect myself a bit.

My husband made a comment today saying that this party is coming up. I asked him if he was going (wasn't sure what his schedule is next week) and he said "yes, and so are you". I'm like, "I am?", and he said "yeah, why wouldn't you go? You don't have anything going on that would prevent you from going, do you?"

He just doesn't get it. He doesn't understand how hard these things are for me and sometimes will pretty much say that I need to get over it, quit being so negative, and bring myself out of this funk (not quite like that, but the general idea).

He wants a baby as much as I do, but his role in TTC is just to show up in the bedroom. He doesn't understand all the stress and emotions that go along with it.

Am I being unreasonable though for not wanting to go?