Is 6DPO too early for symptoms?

Lindsay

The past few mornings I’ve barley been able to eat breakfast. Not because I feel sick but I take one bite and am full. Like uncomfortably full. My boobs are tender - not horrible but they’re never tender. I’ve had a headache 3 days in a row. AF is due the 23rd so I haven’t tested but I thought that having symptoms this early wasn’t the norm. What do you guys think?