Just found out that I'm pregnant - 3 weeks, what precautions do I need to take?

Britnee covered a lot of good things with hot tubs and tanning beds. I just have a couple things to add to her answer. You may want to wash your hands a lot and try to stay away from anything that can make you sick, viruses can be harmful in early pregnancy. Nothing to be neurotic about, just pay attention. Also, there have been studies of the dangers of deli meat. Really I would try to eat as much organic as possible, I don't think doctors say to do it but if you look up things about preservatives and pesticides it's kind of scary. However plenty of healthy babies have been born without organic foods during pregnancy. Congratulations and good luck!