Hi. I got my period last month, and it was for 4 days. About two days after it ended, though, it came back for another day and then ended for that month. It came back in 27 days, so it is regular. It lasted 4 days, ended, but in two days, it came back for a day, went away, came back, and left again. When it ocmes back, it is kind of heavy and red, but only sometimes partially brown. Is this normal, and is there anything I can do about it?