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Expert Q & A Answers About missed menstrual cycle

What can cause variations in menstrual cycles?

I am a 37-year-old female and my menstrual cycles are usually 28-29 days. But for the last three months, they’ve been about 30-31 days long. Most recently, my last cycle was only 23 days. I haven't had sexual intercourse lately, but I did take a couple of home pregnancy tests just to be sure, and they were all negative. What can be causing my menstrual cycles to be longer and then really short?

How long is a normal menstrual cycle?

I haven’t had my period in 42 days, which is unusual for me. I’ve also been eating a lot, and my stomach feels different. Is something wrong?