Low sex drive

My husband and I got married in November 2019, before that we were both living with our parents and we would have sex almost every chance we’d get! But now idk why my sex drive is SO LOW! It’ll be days or WEEKS where we won’t have any sex. For me to get in the mood I either have to watch porn or have him go down on me... I feel bad at times because I think I’m not satisfying him enough but he assured me that he understands and never seems to get upset by the fact that I’m not really in the mood. Is this normal? Has anyone else been in the same position? 😔