Lubricant for while trying to conceive?

I was told not to use lube when trying to conceive. The theory is that it makes it harder for the sperm to travel to where they need to go. Now of course that doesn't mean people haven't gotten pregnant while using lube, just that it may make it more difficult. I would recommend using the pre seed as others have suggested. Oh and we got pregnant the month we stopped using lube, could have just been a coincidence. Good luck!