I started spotting on the 24 and continue on the 25 so I put on my log that I had started my period since I was supposed to start on the 25th ... my periods are usually really heavy !! and this is really light mostly when I wiped a have some blood and then I don't really fill up a pad ? what could this be I had sex the 23 and the 17 of Jan but of course I use protection.. so idk if it's my period or if I'm having implantation bleeding?