Don't stress too much about symptoms! Some women feel them as early as 4-5 weeks, while others don't feel a thing until 2 months. It's totally fine either way.
Usually, early symptoms like breast soreness, fatigue, or mild nausea start around 5 to 6 weeks. But some moms have completely symptom-free early weeks!
I felt extremely fatigued and thirsty around the 6th week. Because of my later diabetes risk, I was always careful with symptoms, but exhaustion is usually the first sign.
With my PCOS, my cycles were irregular, so I didn't rely on missed periods. My breast tenderness and mild cramping started around 5 weeks, but be cautious and test first.
I had some cramping early on, which made me anxious due to my history. If you experience severe pain or spotting with early symptoms, please contact your doctor immediately.