Help could acupuncture have lengthened my cycles


Hi all

I started acupuncture two months ago and past two cycles have been over a week longer . Last month 39 days this one 42days

Went off the pill in Jan and always had cycles 28-30 days

I took 750mg of vitex this past month

Could it be acupuncture causing it ?

Don't think it's vitex as first lengthened cycle I didn't take it

Anyone had their cycles lengthened?? Really wish I was regular again