What do I do besides praying...?

So I got pregnant... Whoo hoo! But it did not come to term. I had a pregnancy when I was 23, and it ended in a miscarriage at about 10 weeks. After that I had two more, one was an empty sack and the second was gone within a week I learned I was pregnant. =( Life moved on, and so did I. I have a partner and we talked about how I cannot get pregnant, so we didn't take any aticonceptives. After a kids b-day party I had very bad cramping. I ended up in the ER, a week after, (this sat.) I started bleeding. Long story short: I have an appointment with the doctor, we talked about clomid treatment, and of course monitoring everything. Suggestions please. What do you think is wrong with me? I know going to the doctor, and listening to the doctor, blah, blah, blah. But I need advice from someone who has succesfully gotten pregnant with similar stories. PLEASE. I'M DESPERATE.