Another visit from AF after using PRESEED for first time.

Ok, I'm devastated. Haven't even been able to get outta bed except to take out my tampon. AF came 3 days early, NO WARNING, no cramping no bloating, nothing. The worst part is I was having a vivid dream that I took a hpt and it was positive and I was soooo excited. But when I woke up feeling wet between my legs, I was shaken to the harsh reality that I'm not going to be a mom. All I can think is what did I do wrong? I used PRESEED, BD every other day, checked my CM and ate well, took my vitamins and instead AF CAME EARLY. I can't imagine going through this again and again and again.