From my own personal experience I will say:

I think my husband feared hurting me, was the main reason he didn't charge in like he had before. Even after me telling him the doctor said it was perfectly okay he was intimidated about the baby who'd be between us....personally, it was a little strange for me too, knowing the baby's there.

Another thing was ME. My son was enormous, I was a friggen house when I was pregnant with him and I felt gross. It didn't neccesarily decrease my sex drive but it made me feel crappy. If I feel crappy about myself then I am not as responsive to him. Men can sense that definitly.

So both issues together can kill some intimacy.

Just tell him you want it, and NOW....tell him his excuses aren't good enough. It won't take that long if it's been awhile for you both anyway....deman what you need, I'm sure you've done the same for him at one point or another.

Hope things get better for you hun, your bundle of joy will be there soon!