I've had the copper coil for four years, periods have been like clockwork. Never had any issues. then about 2 and a half weeks ago I started to get period pains when i really was not due on which i thought was strange, then hormonal crying at everything. Then my period was late. On the day my period was late i did a digital test which was negative then one the following day, negative again. Today I am four days late and got a faint positive. I still have period pains and have had them for weeks. What is going on I am so confused!