My fiancé and I haven't been TTC but haven't been doin anything to prevent it for months without getting pregnant. Got a BFN yesterday and it broke both of our hearts. We decided to really try to get pregnant. Only 1 problem...he is very big and we have to use KY/Astro Glide (I have a reaction to others) or saliva. I hear that those can kill the sperm and keep you from getting pregnant.  Am I correct?  What are my options?