ok are we all nuts to think that our nipples or boobs hurt starting at DPO 5 or 6 etc...?

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Some women experience a temperature drop on the day of implantation
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Implantation bleeding or spotting (slight staining of a pink or brown color about 8-10 days after ovulation)
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Lower abdominal cramps
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A positive blood HCG pregnancy test (about 10 days after ovulation)
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A positive urine pregnancy test (as early as 10-14 days after ovulation or 3-4 days after implantation)
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An elevated BBT curve for 15+ days without a menstrual period
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A missed menstrual period (amenorrhea)
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Nausea (as early as 2-4 weeks after ovulation)
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Nipple or breast tenderness (about 3-4 weeks after conception)
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Fatigue (3-10 weeks after conception)
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Vomiting (3-10 weeks after conception)
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Food cravings (1-2 months after conception)
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Frequent urination (typically after 1-2 months)
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Softening of cervix (generally not before 6 weeks after your last menstrual period)
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Constipation (later in pregnancy)
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Lower back pain (later in pregnancy)
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Darkening of nipples (after 14 weeks)
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Fetal heart beat on sonogram (8-9 weeks after conception)
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Fetal movement (16+ weeks after conception)
any way here is the link..
http://fertility-facts.com/pregnancy/symptoms.htm