We'd like to conceive but now i heard that the 3 months before you conceive are important. i lived healthy and took prenatal vitamins, but did take xanax for 5 days or so, 2 months ago. would this be a reason to wait a month before trying?

Not particularly. Be aware that the eggs you release are all present in some form from birth on. Any exposure to any agent, drug/radiation/etc. May have an effect on the one that releases when you try to conceive. It is important to set the stage for the exposures you can control as soon as you can. Good nutrition/rest/exercise & avoiding alcohol are a must.