 [ Symptoms ] is it normal to skip a period when switching from a name brand to an off brand birth control  i always had normal periods for four years on my previous birth control i switched to this new birth control four weeks ago and i have not had my period this week at all i remember accidentally skipping a day last week could skipping one day mean i am pregnant [ Disease ] hi not if it was last week and missing a day is not such a bad thing could be that there is a different mix of the two main hormones and its just made you skip a period ok good luck