I took it for PMS & only realised it could lengthen your cycle after I'd been taking it a while. I used to take it throughout the cycle as that's what the instructions said.

I had two early miscarriages whilst using it - I'd stop taking it as soon as I suspected I was pregnant (stopped at around 3-4 weeks) and I'd miscarry at 5 weeks. I stopped taking it and the next pregnancy stuck.

My cycle did not change whatsoever when I was taking it, nor did my LP. I did have less mood swings though.