Preseed?

Okay so my partner and I were trying for about 4 months and we did not get our BFP till we tried Preseed. We only used Preseed one cycle and boom I was pregnant. The pregnancy recently just ended it was a chemical. I have read that people have had the same thing happen and there’s so many thoughts on it such as it allows weak sperm or that it causes chemicals. Soo should I use Preseed again this cycle or no??? Has anyone used preseed and got pregnant after a chemical with a successful pregnancy??