How can I fully cleanse my body, my husband and I want to conceive but we decided to have a wild night and did cocaine and weed. I'm scared?

Three weeks . Stay clean! it will clear. But if you want a child! you need to stay off for ever! to be a great parent!
Get help for both of. You. Cocaine is a dangerous drug and can harm you and your unborn child if you get pregnant. Do not get pregnant till you stay clean and sober for at least a few months (aa would recommend a year of sobriety). Look into treatment programs, out patient evening or day treatment. Get an evaluation to assess what level of care you need.