TTC with preseed!!!

So I been trying to conceive for a year with my fiance... He is a 57 year old man with no children and I'm a 26 year old with two kids from previous relationships. I love this man and really want to be able to give him a child or children before it too late for either one of us. He a good stepfather to my kids. So yesterday I ovulated and started using preseed. Hopefully this preseed work.