What in this supplement could have caused me to screw up my cycle...

I had to stop using it even though customer service kept insisting my body needed 3 months to get used to it.
I took it for a little over a month and the following month I had a 60 day cycle! (Translation: No period!). I'm 37 and I have only ever not had a period 1 or 2 times in my life.
And when my period finally decided to grace me with its presence, I bled for 10 days???!!!! 5 of the 10 days were disturbingly heavy days! This has never happened to me. I have 5-7 day periods max.
I wish I knew what particular ingredients may have had adverse effects on me.
Fairhaven health has other awesome products but this one did not jive.
Any ideas??
Blessings and baby dust,
Amy:)
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