Literal phase spotting

Nicole
My AF due 2-24.  Does anyone know if I had low progesterone would my BBT drop?  I've had spotting yesterday and today (8-9DPO) I know it could be implantation but I also know that's not too common.  My temps are still up but I don't know if that's a good sign or not.  I'm still new at charting so any insight would be greatly appreciated!  Baby dust to everyone!!