Brown Spotting, No Af

Hi ladies, I've never been pregnant before so I need some help. I tested on Friday (cd 30) and got a BFN. My cycles are usually 28-30 days. Then Sunday I started seeing some pinkish when I wiped, then a little brown, still only when I wiped. I chalked that up to af starting because that's usually how it starts. Only this time it never progressed and still today it's only spotting, plus not really cramping. And I've been wearing a panty liner, but nothing shows on there, it's inly brown when I wipe. Should I test again, or does it not seem likely. 
P.s. When I get af it usually starts with brown spotting and then gets super heavy within the day with terrible cramping.