I still don't understand why the lining won't build up - on the basis that when you have the 7 day break - a bleed is expected and a bleed can only happen if there is lining to be shed and therefore it must still build up (to a certain extent) on the Pill. I presume the only explanation is that gradually the continuous progestogen does in fact thin the lining. If that's the case I don't understand why a 7 day break is needed - except to mimic the drop in progesterone and oestrogen during the normal menstural cycle - and the associated pms!
A withdrawal bleed and a true period are both doing the same thing - shedding a built up lining! That is also what happens when you take sequential HRT - you get a withdrawal bleed ( or not) to shed the built up lining. The only difference with a true period is that the lining has built up and is being shed as a result of hormonal changes surrounding ovulation!
That's interesting Taz - welll that must be based on what's OK to do, but odd that the other site said it wasn't adviseable except under doc? However not the first time we encounter contradictory information
![Smiley :)](https://www.menopausematters.co.uk/forum/Smileys/extended/smiley.gif)
Hurdity x