Ok, before someone says about how we know we are meant to be careful for the first 7 days... well i wasnt...

so i had unprotected sex 3 days after having the implanon fitted. 9 days later and I have started spotting. Have been feeling rather strange lately. Dizzy etc.
Is it more likely that its just my body getting used to the implant, or could that be an implantation bleed?