Hi Maria
I started my first IVF cycle last month and my dr said that there would be no harm in trying to conceive naturally whilst i was d/r. In fact, he seemed to encourage it!
Well, i found out about 10 days ago that i am pregnant (6 weeks today) and, fingers crossed, everything seems to be going well so far.
My dr has given me some estrogen and progesterone supplements to take for a couple of weeks until the d/r drugs are completely out of my system, but other than that he said that there wont be any harm at all in getting pregnant during ivf tx.
Hope that helps.
Good luck with whatever you decide to do.
Nutty xx