Trouble in the bedroom

I dont know what to do. I'm 26 weeks pregnant and have no sex drive. My husband is in a job he hates and it's making him depressed and withdrawn... We have been married for 2 years and this is the longest we have gone without sex. I'm worried. He normally tries to get some affection atleast a few times a week. It's been 2 months. I attempted to get things started last night and he said he just doesn't feel like it. Should I be worried? Any advice guys? My pregnancy emotions are making this an emotional situation for me...