Okay so I've had two strange periods. Last month it came for only 2 days && it was very light & not constant like my normal period & der was no cramps. This month I had uncomfortable but not painful cramps ' & my period lasted for 4days ' the first day I only wad bleeding for a hour ' the second day nothing until that night ' 3rd & 4th day spotting brown.. now I'm always cramping and I'm off my period. What can be wrong?