Hi Catspelle
It is common to experience nausea from increases in oestrogen but it should settle - as you are perhaps finding now? If you continue to experience nausea or stomach problems then a transdermal HRT is preferred ie patch or gel.
Your body is still recovering from your operation and it will take some while for your hormones to re-adjust - yes I agree you may want to increase your dose if 1 mg isn't working fully, and also think about testosterone - as your ovaries were also removed. Patch and gel oestrogen offer more flexibility in dosage, since with tablets there is only 1 mg or 2 mg whereas patches come in 25 mcg - 100 mcg so no need always to double the dose! Ditto gel there are pump measures.
Glad the Zumenon is helping though - and good luck with your GP appointment
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Hurdity x