Am I just paranoid or should I be concerned?

My husband and I have been together for 11 years and married 4 years. He is a tow truck driver and works crazy hours(every other week 6 am to 2 pm, the other weeks 2 pm to 10 pm), but I am very sexually active. We have sex maybe once a week and I'm lucky if I get it more! I try dressing up, putting slutty make up on, sexy heels, etc. He is only 32 and I'm 28! He used to be a huge slut and says that is why he doesn't need it as often anymore! I feel like he isn't attracted to me anymore but he says he loves me and thinks I'm sexy!

Am I just paranoid or should I be worried?