"O" Blood Type might be a factor...

Been researching a lot. Found this:
http://www.msnbc.msn.com/id/43711661/ns/health-womens_health/#.Tl6_u673KAs

A woman's blood type may yield clues to her fertility, a new study suggests. The results show that, of a group of women in their 30s who sought medical fertility help, those with blood type O were more likely than women with other blood types to have diminished ovarian reserve, meaning their ovaries had few eggs or had eggs unlikely to meet with success during in vitro fertilization procedures. Type O blood is the most common type in the United States.
"I don't want the message to be that women in the healthy population should be petrified that their blood type may predict compromised fertility," said study author Lubna Pal, who researches reproductive endocrinology at the Yale University School of Medicine.

But if the study's link is shown to hold up for other women, then the connection may provide a tool for earlier, more accurate fertility prognoses, Pal said.
The study was published online on June 26 in the journal Human Reproduction.

[trying43]

Its possible....my mom has o and tried to get pg in her 30s she had multiple mcs and was never able to conceive again. (This was quite a few years ago) the drs never could figure out why....interesting info.