Early pregnancy symptoms but test is negative

I am so confused. Have been experiencing early pregnancy symptoms (for example- tenderness in brests, fatigue, nausea that comes and goes and a sort of pressure in my lower abdomen) for at least 1 week. Took a pregnancy test twice and it came out negative.

I am on CD 24 so still early, but the symptoms confuse me.

This is the 3rd time this happened this year!

Anyone experienced something similar?