Okay so we had sex on June 20 and got my period on June 22 it ended on 26. It lasted 4 days and was pretty normal. Now its July and I expected my period to be on the 24th and yes i did have my period that day but its July 29 and my periods are still on. Is it normal to have a 4 day period last month and then have a period this long?? I there a chance of getting pregnant? Help im only 15 and im really scared :-((