If you dont want too have sex, then dont have sex.
With me it was the oppisite, my b.F didnt want to go "poking the baby".
It is safe to have sex while your pregnant, your cervix is closed.
Id say enjoy it while you can, you dont have to worry about getting pregnant and the fun should be back, after ttc.
You dont even have to worry about periods :)
obvioulsy though, dont have sex if you are bleeding or find it painful.
But like I said, if you dont want too have sex just yet, then dont. Its your body, make him wait.