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I have very regular menstrual cycles. They usually last 3-4 days. The last one I had was only about a day and a half but I have severe cramps and back pain and hardly any bleeding. Now only 18 days after the first day of that abnormal cycle I am on my period again. I have horrible cramps and back pain the first day with hardly any bleeding, the second was the same with a little heavier flow, and now is the third day, back is still killing me. My br___ts have been so tender and swollen for the last week, and I have been so moody too. Just don't know what is going on. I am just hoping it's not fibroids...is there anyone out there who has experienced anything similiar or has any possible answers?