Late by 4 days but negative test

hm

I usually have normal cycles. In the 10 days leading up to my period. My husband and I had unprotected sex 6 times and he finished in me every single one of those times.

My period is now 4 days late and I spotted only once yesterday and once today, very very light spotting.

I took a test and idk I just have line eyes.

Is there a chance I could be pregnant? How much longer should I wait to test again ?