1 week after Juvederm I found out it is not safe to breast feed, but I have been. What should I do?

If a drug, or a device, has not been tested specifically on breastfeeding women then it cannot be "approved" for that population's use. That being said, there is no reason why this product should be any problem as I would not expect it to be found in breast milk and even if it was it is probably safer than lots of the food that we eat. 

Thank you for your question about Juvederm.  Juvederm is a hyaluronic acid based filler (HA), HA is naturally occurring in our joints and skin.  The product stays where it is injected and therefore should not cause harm.  However, our office does not recommend nor treat women that are pregnant or breastfeeding.  
To be sure you receive the best treatment, see two or more experienced, licensed and board-certified providers in your area for a complete evaluation to make sure you are a good candidate and that it is safe for you to have treatment. I hope this helps.

According to Allergan, the manufacturere of Juvederm, there has not been any indication that the presence of Juvederm will affect your baby through breastfeeding-does that mean that it's safe?  Who knows?  I advise all my patients who are breast feeding  not use fillers and Botox until they are done.  It's always better to err on safety than the unknown.