Two periods in one month?

I was stressing out a lot during the winter months and exercising to let some of that stress out. I did lose weight. However, my period stopped for about 4 months. It came late April ( a full length) and came on again within 14 days (another full length period). Through out my life I've had periods to skip a month or two, but never to come two in one month. Has this happened to anyone else before? If yes, what did you find out. Google really didn't help much...

It could be an ovarian cyst. I had this problem about 7 years ago.

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Don't mean to hijack the thread but I also didn't want to create a new one Lol

Reasons for a period every two weeks could be:

• Dramatic weight loss or gain -- This changes the hormones in the body and these are responsible for directing when the period will start.
• Excessive exercise -- This too disrupts hormones.
• Stress -- Exams, family argument, financial worries, divorce, even a holiday can cause a temporary change in your menstrual cycle.
• Illness and/or medications -- Some medications can affect your cycle. Talk to your doctor about altering or stopping your medication if you think this is happening.
•  Uterine problems such as polyps, cysts, fibroids or tumors (either benign or cancerous).
• Sexually transmitted infections -- These can cause bleeding in between periods which can be mistaken for a period.
•   Thyroid problems -- Thyroid disease could cause a thickening of the uterine lining, resulting in more bleeding than normal.
• Reactions to contraceptive methods -- Sometimes the pill, depo provera injections or the copper-only IUD can result in a change in your cycle.