* Risk of infection: Tattooing involves breaking the skin, which creates a risk of infection. While rare, infections can be dangerous during pregnancy and potentially harm the developing fetus. Some infections can even be transmitted to the baby during birth.
* Chemical exposure: Tattoo inks contain various chemicals, and the effects of these chemicals on a developing fetus are not well-studied. There's a potential risk of the chemicals being absorbed into the bloodstream and affecting the baby.
* Stress: Getting a tattoo can be stressful for some people, and stress during pregnancy can have negative effects.
* Limited medical treatment: If you were to have an adverse reaction to the tattoo, some medical treatments might be limited due to your pregnancy.
Since you are only 4 weeks pregnant, you might not even know yet. It's advisable to wait until after you have given birth to get a tattoo.