I have a huge indention on my left hip, supposedly as the result ...

I have a huge indention on my left hip, supposedly as the result of an injection I received 4 months ago. I got a steroid shot (not sure the name) for a rash and itching. No immediate side effects and then about 2 mos. later I notice a lump on my hip about the size of a marble that was brown discolored spot. Then I remembered about the shot and thought it was a result of that. Forgot about it until about 6 weeks later when I got out of the shower and noticed a huge indention about the size of a golf ball on my left hip. A week later, I started having pain at that site which would radiate across my entire lower back, down my leg and up my arm. Sometimes the pain was dull, sometimes like a bad burning sensation with tingling all over. I went to the dr. and he thinks the indention is from the injection but is sending me to an orthopedic dr. this week for more testing due to the pain I am having. Maybe related, or not, I found a lump in my left breast this week, had it checked and have to go to an imaging center next week for more testing. Could this be related?? Also I missed 2 periods after the injection and my last period wasn't normal. Please keep posting these comments from others. I'm going to call my dr. Monday to get the name of the injection.