Couldn't agree more.
I've had my share of anxiety with two of my three tattoos. I felt unhappy with a tattoo I got last year almost immediatly. I stressed and stressed about it, seeing things that NO ONE else was seeing. I ended up getting some work done underneath it...and you know what happened next? I was unhappy again. Finally I had to stop. Still haven't done anything with it, but I try to remember that it can be added/lasered out, if I want to later.
I think your tattoo looks nice though. It's certainly pretty and well done. As Hogrider and SStu said, give yourself some time and don't rush into anything.
I'm now laughing to myself because I just posted about my own regret with my latest tattoo. It's so easy to give advice, but not always to give yourself the same advice. Ah well...