Relationship stepdaughter help please

Reason why I'm posting this here is because this is really affecting my intimate relationship with my husband and therefore I see my possibilities of conceiving even harder. My husband and I have been married for 8 months and moved in a year before we got married he has a 6 year old daughter from a previous relationship. We live in a border town little girl lives with her mother in Mexico and my husband brings her over every single weekend since she hasn't started real school as he says he will bring her sometimes since Thursday all the way to Sunday or even more days sometimes. Meaning she is here most of the week all vacations. The problem is that he sleeps with her in another room leaving me alone every single night that she is at our home. I have talked to him so many times about this I'm just get frustrated don't know what to do. I don't think is normal for him to perfer to sleep with his daughter than with his wife. He just throws at me that I don't know what it is to have your kid cry for you to sleep with them or that I don't want his daughter at our home😭. What should I do I'm desperate for help. I love him and i love his daughter too but I'm the one being left out and have no idea what else I could say or do.😭😭😭😭