I have had three in as many weeks, with only a few days respite in between. They are more severe and with a higher amount of nausea than usual.Any other sufferers out there who might know why or have been through similar?

I can't pin point any life style changes that would be significant and although my stress levels were a little high, they are settling again now, so not that, I don't think.Any input would be gratefully recieved.