Hi Sconeonamission,
I was reading your post and thought I would goggle it, I found the following info.
The ink that is used in tattoos is subject to regulation as cosmetics, but none are approved for injection under the skin. However, the ink molecules are too large to pass into breastmilk.
Most tattooists will not knowingly tattoo a pregnant or breastfeeding mother. It is suggested that mothers wait at least until the child's first birthday to give their bodies a chance to recover completely from childbirth before getting a tattoo.
While the body is healing after a tattoo—and producing milk—and if the mother’s body would "reject" the tattoo, the possibility exists that it could harm the baby. This is especially a problem if the client does not follow the aftercare instructions and develops an infection. Alex Stewart of a former natural parenting Web site in the UK suggests that mothers give their bodies 18 months to fully recover from childbirth before asking it to heal a tattoo.
My Husband tattoo's but he has never done any one pregnant or breast feeding women.
I hpe this info helps, it is a bit 2 sided but at least it gives you the facts.