Hey everyone,

So i started spotting, so put in a tampon like normal and carried on with my day just thinking this was my period. The thing is its been 4 days now, and it hasn't come ive just had spotting so light I don't need a pad or a tampon or anything. This has never happened I usually have quite heavy but regular periods. Its driving me crazy now because I don't have a clue what's happening now!! I have googled it and do you think it could be implantation bleeding? I have had unprotected sex about 3-4 weeks ago, but I don't know when would be the time implantation bleeding would happen? Anyone else experienced anything like this?