Hello! Can you please tell me, are we allowed to use any lubrication (eg. preseed) for a home SA sample colection? The fertility clinic told us not to use anything (no matter if masturbating or using a condom, which I already bought). I am not sure if I can do that without any lubrication. We usually use preseed while TTC. Thank you for your answer. Any sugestion would be much appreciated. Regards.