I took a test about ten days ago it was negative I took it a week after my period was late by two days I got my period or what I think was my period it lasted three days and now a month later my period is not starting on the right day I feel nauseous and I have cramps and back pain and I don't know what's going on I googled it and it said that some women can bleed around the time of their period but not enough to fill pads but mine was heavy medium and light when I got mine for the three days but I also read that periods cycles can change so I'm confused can someone give me some insight ?? I would highly appreciate it thank you