I've been pregnant twice before and have been tracking everything except my basal temp. my last period was was the 21st of last month and nothing since. could i be pregnant or should i wait to take a test.

Pregnancy diagnosis: A woman is fertile from five days before ovulation to the 24 hours after ovulation. Ovulation can occur as early as eight days after the first day of the last menstrual period Common sign and symptoms of pregnancy are missing a period, nausea/vomiting, fatigue, breast tenderness. Almost all pregnant women will have a positive urine pregnancy test one week after the first day of a missed period.