Looks like your post got missed Ginagee. To find out more about Tridestra if you go to the home page of the forum and put that in the search box you will get threads about this HRT type in particular.
Mostly there seems to be some criticism of its use in early peri-menopause when periods are still fairly regular but sporadic - due to breakthrough bleeding when ovulations occur between the prog cycles. In late peri and post-menopause it will enable you to space out the prog although these long 3 month cycles have fallen out of favour with gynaes due to the increased risk of endometrial thickening and potential cancer. Most of us doing longer cycles go no longer than 2 months. Some women report heavy bleeds and cramping on Tridestra as I recall, due to the long period of time between the prog cycles and therefore a greater thickness of endometrium (womb lining) to shed.
The other alternatives if you want to take tablets is to take oestrogen only tablets and separate progestogen (either Provera or "natural" bio(body)-identical progesterone - Utrogestan - and then choose your cycle length in collaboration with your doctor, or else have a Mirena coil fitted which would eventually stem any erratic bleeding.
Hurdity x
