Patient : Hi,
I was due on my period march 19th but took northisterine to delay my period for a week as I was on holiday. I then started my bleed on march 25th.. I have just found out I am pregnant and am working out my due date.. Do I go from the date I should have had my period or the date I did have it after the pill as I'm not sure if it messes up your o ulation or not.
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