Tracking IUI Success Symptoms Day By Day can be exciting for couples hoping for positive results after the procedure. In the first few days, mild cramping or spotting may occur due to implantation. By day 6–10, you might notice tender breasts, fatigue, or light bloating as hormonal changes take place. Around day 12–14, early pregnancy signs such as nausea, mood swings, and increased urination may appear. However, these symptoms vary for every woman.