Negative test

All right so, I took a test this morning at 11 DPO according to glow, and it was negative. But since she's only been tracking me for around a month I was wondering if it could be possible for her to be off on my ovulation date. I baby danced every day for almost 2 weeks around that date, could it be possible that I'm just slightly under 11 DPO, and it could be too early to test?