Any advice

So I have a question I am 29 years old my husband we just got married in October we have been together 5 years and have two boys she is 48 so my question is is there something wrong with me that I want to have sex and I'm pretty much begging him and it's like I'm not good for him or he doesn't want me we decided we were going to start trying for a girl and it's like every time I'm in my Peak he doesn't want you to do with me I don't know if there's something wrong with me or what ladies please any ideas

This is me. I dont get whats wrong with me any ideas what i can try. Am i not sexy enough😭😭😭