Can I be?

Me and my husband want a baby. So we have been having sex more than usual. Last month I took a pregnancy test because my period was 10 days late. The test resulted in a negative. The very next day my period started but it was very light and only lasted for three days. Which is unusual for me because I usually have periods that are heavy and last for 5-6 days. A week later a got my period and it was normal but about 2 weeks early. its been 3 weeks since then but now I feel nauseous,weak, im not hungry, my back and lower abdomen hurt. Am I pregnant?

You may be. For some strange reason and I have no idea why, it's hard to get pregnant when you try and oh-so-easy when you don't want to. Whether or not it's possible to trick your body that way, I don't know. :-)

Here's some good information that may help.

http://www.plannedparenthood.org/health-topics/pregnancy/how-pregnancy-happens-4252.htm