Hi!
I just recently also experienced the labor like cramping and was told it was part of peri-m. My periods were always 35 days apart when I was younger, then a year or so ago, they began getting closer and closer, lighter and only lasted for 2 days...until this past month!!!!
I started and it was a very heavy flow with very painful cramps that had me in the bed for 2 days in tears. I took advil and suffered through it...and it lasted 6 days instead of the lighter 2 days periods I have had for the past year.
My Doctor said it was common for someone with PM....geezzzzzz, I dont know what to expect next and dread suffering through that pain again this month.