A 25-year-old female asked:
when do pregnancy symptoms start? also, if you're only about 2 or 3 weeks pregnant would that mess up the menstrual cycle that early?
1 doctor answer • 1 doctor weighed in
Obstetrics and Gynecology 25 years experience
As early as 1 week : I have heard patient describe symptoms as early as 1 week after conception (or 3 wks after first day of last period), which is about a week before pregnancy would be detectable by most urine pregnancy tests. Most women however describe onset of symptom starting 4-6 wks after the first day of their last period.
Last updated Nov 22, 2013
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