Hi Jenny

Without knowing what's going on, I'd say wait until Monday and if your period hasn't properly started with anything bright red do an HPT as that's the only way to be sure - it could just be pre-period bleeding. It isn't unheard of to get some bleeding when your period is due, some people don't even miss their first period, and you may continue to get slight bleeds at 8w and 12w pg as that's what your body is used to.