Spotting lightly for the past five days..

Alyson

Looking for input! I used to have a 29 day cycle. For the past 3 months, it shrunk down to 24 days. This month, no period at the 24 day mark, but very light spotting. Happened again on day 25 through today (day 29). Have taken a pregnancy test every day and it keeps coming up negative. This is highly unusual for me-I never ever spot. Looking for input! Does this warrant a call to my obgyn?