How early does pregnancy symptoms starts, is der any chances of pregnancy wit small follicles, wats d complication of delayed conception?

2-3 weeks after sex: A woman of childbearing age who has some nausea (with or without vomiting), some fatigue (feels less energetic), a sharper/stronger sense of smell, mild soreness/swelling of her breasts, and maybe some food aversions and cravings... could be pregnant. Symptoms can occur before missing a period. Many women don't know exactly when they ovulate, so they may count 2-3 weeks after sex to feel symptoms.