Hi I'm on estrogel and utrogestan; I take utrogestan on the 1st to 12th day of each calendar month. So I would start it tomorrow. However; I've had the cramps all day which usually signify my period is mere hours away.... If I get my period soon should I continue with my 12 days of utrogestan from tomorrow or not? I suspect this may be a side effect of my astrazeneca jab which I got at the weekend... 2 out of 3 of the friends I talk to about such things have had an unexpected period within a week of the AZ.