wanna TTC sister

my situation is different. we are TTC i have had a miscarry in janu 2012, feb 2012, and end of may 2012. doctors say nothings wrong..... i started taking fertility blend its been a month on it. im very very regular even after all of the losses. june 4th i had my normal AF we made love through out the month. june 30 (5 days before AF) i started spotting. it only lasted until july 2. not trying to get my hopes up i waited until today to take a test and it was negative.... any thoughts on this???