Hi Scorpio48
I've just looked back at your old threads and see you were late peri-menopause (may have already been post) when you started HRT and will now be almost 50? As Dancinggirl says your own oestrogen may well have become much lower since you started HRT so you are noticing this through decline in mood.
I tried looking up these tabs as I wasn't sure which was which but the product info on the web gives different colours! I presume the white are oestrogen only and the green the combi ones? As Dancingirl says the first few days after the swap is classic pmt - usually tension, headache, irritability, sometimes feeling as if head will explode - but this should subside. Unfortunately there isn't long before you then have to start taking the combi tabs again!
The other thing is you might be becoming more sensitive to the (synthetic) progestogen in the tablets - norethisterone is notorious for causing side effects in some susceptible women.
I agree with Dancingirl - why not try the higher dose - alternatively you could try Femoston (at the same dose that you are on) which is better tolerated and see if you feel any different. I would only change one thing at a time though!
Hurdity x