Feeling hopelessly Alone

It’s so much I’m a 49 year-old female that have been trying to conceive for the past seven years with my Husband. I have had several test done. I still have my cycle normal. The doctors said everything is OK besides a fibroid which should not interfere we tried to conceive. I do have one child that is now an adult from a previous relationship. My Husband do not have any not even from my previous relationships it has gotten to the point in our marriage where every so often he will bring up the pressure that he’s getting from his family more so in regard to lineage of name Every so often he would ask me how do I feel about polygamy and that he’s never thought about polygamy, but because of the situation that he’s in makes him think of that I am not in support of polygamy. I don’t think he believes sperm health has anything to do with conception. He even voiced concern about me picking the person I’m not saying that he should be a father. he deserve to experience that with the situation my compromise was going through surrogacy because with surrogacy there’s no physical touch, even though it will still be hurtful because I do still want More children at least he would be able to experience fatherhood but the fact that he don’t believe in, that makes me believe he just want to be physically intimate with other women while using he just want a child as an excuse because going through surrogacy will still give him the same outcome and we will be able to raise the child without any issues as in female drama because a surrogate job is too carry children that other people can’t carry and just release that child to us after going through all the legal documents and paperwork . Although the child did not have any part of me, it will still be his and I will raise it as my own. What do you think of him physically being intimate in another person it breaks me and if that’s something that he decided he wants to do I don’t think I could be with him ever again. I love him enough to let him go, but he’s not seeing it that way. Anyone else have been through or going through something similar?