Should I or not?

I'll be 14 DPO on next Sat (Oct 18) My AF is due on the 19th and my BFF and I have had plans to get tattoos together while in down (I live in another state so it's not like I can get it anytime with her), but I'm unsure since I COULD be pg. I've done research and there's more saying it won't hurt but still there is that little chance. However I know the how we are gettig it done and they are extremely clean and sterile (I've had 3 tattoos for them before). I just wanted some advice. Please no bashing, I haven't made a decision yet.