Husbands sex drive

Elizabeth
We're both 33. Been married about 9 years and together for 13. His sex drive is thru the roof in my opinion. He wants it everyday if not twice a day and if we go more than 2 days without something sexual he gets cranky. It makes me feel like I'm doing something wrong, but I'm 11 weeks pregnant and we have a 2 1/2 year old so I'm constantly tired. Any advice?