I had a deep cyst just in the corner of my mouth that looked horrible. I had previously did a hot compress on it but almost nothing came out so I went and got a cortisone shot. I have never got one before and it is now 20 hours after I recieved it. The pain is mostly gone but it is only a bit smaller. There was a scab forming on top which I picked off and it is not red and raw underneath. Have I messed up the effects of the injection or will the pimple go down?? Thank you!