They already told you, but I want to repeat: if you feel like this, do not get a tattoo.
Please, don't take that as a dismissive, who-cares answer: it's actually the most caring thing someone could recommend you, because if the fear you experience is strong enough to make you write about it on a public forum then it's not so unlikely that it would make you regret (really, strongly regret: a deep, encysted fear is not something you should underestimate) getting a tattoo.