I received botox today and I'm still breast feeding my 7 month old. Is he going to be ok?

Botox is contraindicated for pregnant or nursing mothers.  I would stop breast feeding and consult your pediatrician.  

Did you tell your injector that you were still breast feeding? There are no studies to show the effect of Botox on pregnant or breast feeding women and there never will be, because such studies are unethical. It is also highly unethical for an injector to knowingly give Botox to someone who is pregnant or breast feeding. There's really not much you can do about it now, but in the future please do not get Botox or let anyone else give you Botox if you are pregnant or nursing.

Botox is contraindicated during pregnancy and during breast feeding.  Please consult your pediatrician.

Although Botox use is not approved during breastfeeding I do not really think that there is any harm to worry about with the small amounts used for cosmetic purposes. I would not use Botox on a breast-feeding mom because it is not approved and because of liability issues but I did use it myself when I was breastfeeding. 

The injection of botox is contraindicated during pregnancy and post-partum in the breast feeding period.  If this occurs, one should consult with their pediatrician. As a general concept, a woman that is breast feeding should avoid all but essential, and physician approved, medications.Best wishes.