i am some what agree with sirus. Getting tattos don't mean  to symbolied of Janki ppl. it's up to what type of tatto you have. but i do suggest that get tatto in such place that you can hide if you need it. like upper arms,back spinal etc.

BTY i have two tatto in my two upper arms. one is Buddha's Eyes and other is "OM Mane Padme" in tibbet lipi.