My cycle is starting to disappear 😢😩

So I usually my cycle is on average between 33-35 days. But this past cycle since I was so irregular since stopping birth control I took 160mg of soy isoflavones on CD 3-7. To help promote ovulation. I heard it's like natures Clomid. I did my research and I decided to use it. So this month my cycle went from a long painful 35 days to a not as painful 26 day cycle. And what I mean by painful is last month I had cramps so bad I went to the ER. Has anybody ever had this happen to them? Going from a long cycle to a short one? With it without meds? Is this normal and or a good idea thing?