Implantation symptoms?

I do have a possibility of pregnancy this month. My period is due in about 6 days and I would normally have super sore swollen breasts and breaking out. What I have been experiencing is cramping that lasts an hour the last two days and light bleeding last night (only one wipe). I've also been slightly nauseous. Do you think this sounds like implantation from any of you ladies with experience or just abnormal pre period symptoms?