Breaking out from Chocolate???

Kristen
So, whenever I'm about to get my period I crave chocolate like CRAZY. It's horrible. For the past couple of years everytime I eat chocolate, for any given reason, I break out like crazy. the past few periods I've gotten, that's all I've craved. This time I couldn't control myself. I indulged in chocolate, I'm now paying the price for it. 
Everytime I've gone to the doctors it completely slips my mind to ask about why it's happening and if there's an alternative or anything I can do about it (besides laying off the chocolate) 
Please leave a comment giving me advice, tips, knowledge, or anything of that sort. I'd really appreciate it. THANKS !