Hay nako, spotting during pregnancy can be worrying talaga, please see your OB or go to the nearest clinic/hospital agad, okay? They need to check you in person and look at your ultrasound results together with you to make sure everything's okay.
A few of us mums have had spotting at different stages and turned out fine, pero ang important talaga is to get checked right away para ma-ease ang mind mo and ma-rule out anything serious. Sending you strength, mommy!