Sex drive

I'm 9w6d and have ZERO sex drive. I mean hell having zero sex drive might be nice. I have like negative fifty thousand sex drive. Before we conceived this little wooly mammoth we were going at it like teenagers! I mean twice a day 5-6 days a week! And now it's been like 5-6 times since I found out we were expecting. My poor fiancé he tries and I just shut it down. This pregnancy is taking more out of me-constant nausea and fatigue which is so unlike my pregnancy with our first (we also had sex normally during our first pregnancy). Am I alone in this? I feel bad but can't seem to force myself to want to get physical. But yet the physical attraction is still there? He makes me feel good everything. I just don't understand what's going on with my body.