No period ?

I'm 5 months past my cervical cone biopsy. I had CIN 2 with clear margins . My periods came right on track until now.I am now on cycle day 37 which is 10 days late and nothing. I have had all the signs of it starting for over 2 weeks. My doctors will not check me or do anything and my 6 month pap is not until May 23rd ..I have took 7 pregnancy tests all negative .I'm scared , worried and stressed out.Could the dysplasia be back ? Cancer ? Can we get stentosis months after a procedure? Anyone have this happen before ? 



Could it possibly be stress that is stopping your period from coming. I find if I’m really stressed/worried I can miss a period but still display all the symptoms as if I’m going to get one. 


Best wishes