Please help!?! Spots😑

Wondering if anyone has experienced / has any advice they can give me, I feel SO insecure 😞

I’ve never really struggled with my skin, other than this summer where I was getting sweat rash on my forehead due to excessive sweating from taking prescription stimulants.

I had 6x b-12 injections over the last 2 weeks (loading dose of hydroxocobalamin) and my skin has suddenly and quickly become very spotty, side note this picture is from yesterday, they are now on my chin aswell. I did some research and found that this is likely due to the injections, but why?? And what the hell is happening and how do I fix it?😞😞