Gina, I don't believe it helps you get a bfp. I would recommend only taking natural ones and folate, not folic acid. Whether doing it before or after your bfp doesn't make a lot of difference to me. Folate is readily absorbed, unlike folic acid. Folate is helpful in the building of the nervous system and early stuff. I would recommend starting to take it no later than 3 weeks after getting a bfp for best use of babe. The sooner the better, though.