Hi, I had a miscarriage April 7, 2010 and started my period April 25, 2010 but I haven't had my period again. I have taken a bunch of home test and some come out negative and a couple came out positive. I then went to the doctor and they done a test and it came out negative. It has be almost 3 weeks since I went to the doctor and I still have not started.

You need to call your doctor back and make them help you figure out what's going on. There's so many different things that can cause late or missed periods it's impossible for anyone online to diagnose you.