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.