Hi Sparklet, I am on a bit higher dose of femoston, 2/10, but got severe stomach acidity, nausea and /heaviness right below the ribs in the last 5-6 days of the pack. So still am not sure whether this was the combined pill or pre-bleed aggravation of symptoms. I got my bleed just today and will see if the symptoms continue . Oral HRT does cause GI upset and also puts a strain on your gallbladder. I have an appt with a GI doctor tomorrow to discuss as I don't want gallbladder or stomach problems every month regardless of the cause. Will write an update. I hope you are feeling better now!