Feeling like an idiot right now.

Shallon • Hello. I like good vibes and indie music.
So a human I am no longer friends with convinced me to start the depo shot and at the time I did think it was a good idea because she said it was fine but now I'm having anxiety attacks over how it can fuck me up and I just don't know what to do. I feel so stupid. 
Sorry I'm posting so much about this. I'm just freaking out.