How early can pregnancy symptoms start?

Conception. Technically; as soon as conception occurs one's body will begin changing on every level. Some women can even tell the moment of conception; believe it or not.

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As a fertile woman I need to know how early can pregnancy symptoms start?

Negative test? If an hpt is negative it's too early for symptoms to be reliable. No reliable symptoms happen until long after a pregnancy test would be positive. Good luck!

I'd really like to know how soon can early pregnancy symptoms start?

Missed period. At the time you miss your period. Classic pregnancy symptoms can include: tender or swollen breasts, nausea or vomiting; lack of a period; increased frequency of urination; headaches, insomnia, fatigue. Moodiness, mild cramping, food cravings; passing gas; enlarging waist line. Etc. There may be an increase in white vaginal discharge.