My periods are between 28-31 days. But in may I started twice the 8th got off the 12th. Started again the 18th it ended the 20th. Then in June I started the 5th got off the the 11th then started again the 22nd and got off the 25th. It's July 22nd and I don't know if I'm late and need to call the doctor can anyone help me please.