I'm an 18 years old and last week, the 28th of October, I had unprotected sex with an ex-boyfriend. This is the first sex I have had in over a year. The morning after I took an emergency contraceptive pill. It has been 8 days since having sex and this morning I woke up with painful cramps and a small amount of bleeding - however my period isn't due until the 15th of november - so this is highly irregular. I wondered if this was a sign of early pregnancy... perhaps implantation bleeding or is it too early for that? Someone help please I am very worried.