We have rarely dtd since conception too.
Just too tired!!!! I have a 2 yr old and a baby attached to me all day plus the pregnant belly.
I love being a mommy, but I sure don't feel like dtd late at night when dh gets home from work.
He's too tired most of the time too.
Not a big deal at all (for us). We always get back into the swing of things eventually but for us its not a big issue while I'm pregnant.
If he worked a normal schedule, maybe it would be more regular. But he works 2-11 and by the time he gets home, I'm already in bed exhausted from the day and from pregnancy too!