Mic/b12 injection

Yesterday I had reached out to belle because im feeling exhausted and I realized that B12 might benefit me. So I placed the order for MIC/B12 not realizing what it was.

When I realized it was IM injection it freaked me out and I tried canceling but can not… with that being said I am scared to death of the injection and am curious if I dont use it do I just throw it away?

I do not want to do IM injections at all and am sad I didnt read everything before hand!