11 DPO too early to test?

Megan

I had sex the day before and the day of ovulation. My breast were extremely sore to the touch between 3-7 dpo so I was quite positive I may be pregnant. My boobs never get that sore even before or during my periods. I’ve been cramping on and off from 7-11dpo no IB. I’ve taken a First Response pregnancy test this morning and it’s Negative. Has anyone experienced this and found out later they were pregnant? Am I testing too early?