Dating Pregancies When Unsure About Dates

Patient : I just found out that I am pregnant and i am not sure what date to use for my last cycle date--my last cycle was only 2 days starting on Dec 23&24(this isn't normal) and my November date was November 25-30 (this is normal)what date should I use??
Doctor :   Many Women are unsure about the first day of their last cycle.  To complicate things, it is not uncommon in pregnancy to o spot or even have a light or normal cycle. The best thing to do is ask your physican for a dating ultrasound. This will help clarify the confusion. A reasonably accurate date is important as it is used to determine the date of routine tests conducted during pregnancy.

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