I have been taking Tridestra for 9 months and they have worked! However I am just starting the 2nd month of my 4th 3 monthly cycle and I have had 5 nights of night sweats (so bad that DH had to sleep in another bed as I was 'like a radiator'), pre-period indicators (very heavy breasts) and started bleeding today.
I've 'googled' but the only results were about production issues - has anyone else had a sudden change in cycles whilst on HRT?