Hi,
I started femoston back in april
1st pack= bleed 3 pills before end of pack so day 26
2nd and since= 3 days AFTER finishing a pack, so 3 days after the progesterone ends.
I think the first one was just new treatment etc, because from my pill days, you always had a bleed when you were on the 7 pill free days.
It might be hit and miss to start and there are loads on here with more experience than me,
I would go for a few days after the progesterone bit, so about 2-3 days into a new (oestrogen only pills)pack.
I have to be honest though, my peri symptoms were SO annoying I couldn't have cared less when i bled!