Ok probably a question I should know the answer too but I dont. About 2 weeks ago me and so dtd and the next day I had some light spotting. I am on nexplanon and in feb my period finally regulated in fact it took exactly a year for them to do so. I should have started no later than the 10th. I have been having some symptoms that I may be preggo but I am not asking about that I am wondering if the spotting I had could have been implantation bleeding that quickly.
It takes a couple days for the fertilized egg to implant itself.