Tmi with pics n chart please help

Today i suppose to start af but nothing so i bding this morning at 4 on must 5 so at 1:20Pm i check my cm and um getting stretchy cm please help me dont understand why um getting stretchy cm the day i suppose to start af i got a positive ovulation test april 7 which was cycle day 12 and i took one the 8th and both test line was darker then control took one today and control line was darker then test line the test by it self from today and the two test together from the 7,8 please help me