46 day of cycle

Last period started January 27 and ended on January 29, only lasted 3 days instead of 4. I am now on my 46 day of my cycle and no sign of my period coming. I have taken 3 pregnancy tests and all game out negative. Just an FYI I am 20, never have been on birth control. A bit overweight. People are saying I’m very stressed out, but my period has been delayed at most 10 days; not this long. I am not looking to be pregnant so please help me