Help I need to know what’s wrong with me

Hi guys thank you for taking the time to read this.

My husband and I have known each other for 7 years dated for two married 6 months. When I was pregnant I had the displeasure I guess you can say of not wanting to have sex. I was always tired. Now after the baby. We had our sex times not as often as we used to. Before I was pregnant we would be like every other day. Now it’s like rare once a month. I left my job to be with my babygirl. Because it’s hard to find a babysitter and especially with everything that’s going on I can’t risk my baby you know. Last night he wanted to have sex and I had just put the baby down it must’ve been like 1:30am. I told him to go to sleep. He got upset because I’ve been doing that ever since I had my baby. I don’t want to lose him. He’s been working his butt off working 10 hours. Mon thru Friday so to me I would be exhausted. Living with my mom I don’t feel right doing so hearing bang bang. Please help. I love him but he’s getting depressed too thinking I don’t love him. He thinks I’m not attracted to him anymore. To me he’s sexy af. I love my husband.