Tattoo time when ttc

Okay ladies I need help missed June's af and I'm currently 5 dpo. I have a scheduled tattoo appointment tomorrow. Should I test before I leave? Or what are my chances of getting a positive? should i go if i get a negative? I feel like I can't move it again! It's paid and if I cancel I don't get a refund.. (obviously if I get a positive I'll schedule for next year)