Has anyone taken Conceive+ prenatal?

I started this prenatal 3 months ago. Prior to taking it my cycle was 35-37 days. The first month I took it my cycle was 28 days. I assumed it was a fluke and just an odd month. But since the I have been 26-28 days. Anyone else taken this and had a similar situation where it impacted your cycle significantly? I don't know if it's because of the prenatal or just my body doing whatever it wants. I also don't really want to stop taking them because I definitely prefer the shorter cycle with TTC (not waiting as long between tries).