I have had my period for over 20 years, and have always been very regular. The last few months, things have been changing. They are closer together, shorter, and accompanied by new symptoms: swelling, severe cramping, fatigue, and sometimes even aches and chills. I just started again, unexpectedly, over a week early...and it's been super heavy.

I had a check up and pap smear last week, and everything was normal.

Does anyone know what might be going on? Endometriosis and PID run in my family.

Thanks!