Implantation bleeding

Mary

I have missed my period for 5 days and my menstrual cycles come like clock work but this one is different. I had spotting on the 20&21 and today I have these very light bleeding to spotting. Am I pregnant or is there something wrong with me? I have all the signs for pregnancy and me and my fiancé have unprotected sex. Can someone please tell me if this is implantation bleeding or me going crazy?