Has preseed helped you get pregnant?

I used preseed one time with my cycle in April and on May 9, I got a positive test. I am supposed to ovulate today, and I used preseed last night. Do you think it really helps to get pregnant? Since I have had two miscarriages, I am not sure whether it will actually help or not. What are your success stories using preseed? Also I am using the clearblue fertility monitor and keeping bbt...not using anything else to help pinpoint ovulation.