Why is this happening.... (Depo shot)

I got on the depo shot last month and I am now breaking out terribly, more than I ever have before in my entire life and it's starting to really freak me out. I know it's all hormonal acne cause it's in my chin/jaw area the most. I'm also on day 10 of my period which is way longer than my normal cycle. I'm starting to regret even going on this birth control... Should I see a dermatologist or just wait it out?