Should I do or not

I just had a baby two weeks ago and my baby father wants to get tattoos. We have been knowing each other for almost six years and staying together for almost three. He wants to marry and have more children but because of our ups and downs, I understand relationships have them, I am nervous. Should I get the tattoo or not? I mean. I want to but I don't want to regret it . I have seen so many relationships go wrong