What is wrong with my body?

Let me say this, I'm healthy, I have no stds, no hiv, no infections. I am very healthy. It's been taking me about a year to get pregnant. I was at one point but I had a miscarrage at 4 months. Latly I've been having very off periods, july-6 days late, august-8 days early, september-3 days late and hardly any blood. The doctor can't figure out what is wrong with me. My periods latly have just be light spotting. I've taken a pregnancy test and it came out negitive. I have no idea what is going on with me. Does anybody have an idea of what it is? Me and my partner have been trying to get pregnant again but, I don't know if it's ben working.

Are you taking ovulation tests to determine if you are ovulating? It sounds like your OB is not doing enough to determine what is the problem. You might want to consider making an appointment with a fertility specialist, so that they can run a gamet of tests on you and, maybe your partner.

After a miscarriage, your periods may be a little off whack for a couple of months. Also, one of my friends became pregnant and had light spotting every month until she delivered (a healthy baby). She didn't know she was pregnant until she was 4 months along.

It sounds like annovulatory bleeding to me. Try charting your BBT and see if you are ovulating. www.fertilityfriend.com

I would get a second opinion from another doctor. did he check for cancer?stress can also make you irregular.