The bar side affects

So I’v had the bar in my arm for about 2 years now and will be having to change it next year.

I really like it because I’m a very forgetful person and I don’t have to remember to take a pill.

It hasn’t affected my moods to much but lately I’ve been feeling really down and I’m wondering if this could be contributing.

Can it affect your mood drastically even after having in for 2 years with no problems ?