My period, which is normally VERY regular, has been three weeks late and DH and I were suspecting and hoping I'm pregnant, but for the last few days I've been getting these regular brownish spots in my panties and I don't know if this is normal or if this is a strange and weaker period (no need for pads or anything). Normally, I have a heavy flux so this is completely different. Any ideas of what might be going on?