I too did a donor cycle & delivered a baby boy last April. You don't need to abstain from going to the bathroom - believe me, the progesterone can possibly make you constipated so definitely don't abstain.
I see you already had your transfer. I hope you get your BFP!! What day did you do your transfer? I had mine done on the 5th day. Good luck! - jen
I hope your transfer went well. I also did a donor egg transfer but was negative. I am starting another donor cycle very soon but, I don't think you have to worry about not going to the bathroom. I am sure your nurse will give you instructions and the main instruction is 24 hour bed rest. Good luck and I am sending you tons of sticky baby dust!!