Is this too light for 13 dpo?

I’ve been testing for a few days and the line has been pretty light.. it’s still light at 13 dpo although the line did pop up much faster. Would you be worried? By 13 dpo on my 2 previous kids, it was a very dark line. I’ve had a chemical before, and it only gave me a positive for like 1.5 days, unlike this one.