, back pain or headache; at other times, more unpleasant complaints appear, including nausea and vomiting, abdominal cramps, fever, and fatigue.
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Often, the symptoms of the first weeks of pregnancy are evident and / or are felt within the first few days after conception. On some occasions, however, these "signals" may be delayed or not manifest at all.
.The most evident and well-known manifestation is the delay in menstruation (amenorrhea) starting from the first cycle following the fecundating coital intercourse. This is not, however, the only consequence of the changes associated with the onset of gestation.