WTF IS HAPPENING!?!?!

Hannah
The first day of my last PROPER AF was 24/04/2016 I had very light brownish bleeding on the 04/06/2016 and it stopped the next morning. I'm still getting negative pregnancy tests? WTAF!? Got a docs appointment tomorrow going to ask for blood tests but surely I'm not pregnant if the tests are still coming back negative and I would be around 8 weeks if I was? Taking into consideration that my periods have ALWAYS been regular since I was 12... I am now 20!? 
Someone help me please put my mind at rest and tell me I'm not the only one that this has happened to!?