WTH - I too suffered 4 unexplained miscarriages, I was told after my second one that it was "one of those things" and they would begin looking for reasons if I suffered a third. That wasn't good enough for me so I sought the advice of a private ob/gyn. Turns out that I have a number of conditions (MTFHR, Factor V Laden among them) that could have been causing miscarriages on their own or as a combination. When I next fell pregnant my ob had me do 3 early blood tests 48 hours a part which showed that my body wasn't producing enough progesterone to maintain the pregnancy until the placenta was fully developed.

She had me taking high doses of folate, daily aspirin, vitamin B etc while TTC and throughout pregnancy and progesterone pessaries until the 12 week mark - the end result is I now have 2 beautiful children, the second of which I gave birth to only 3 weeks ago!

Losing a pregnancy is one of the most difficult things we ever have to face but I believe that as long as you keep searching for answers there is hope.