Post menopausal bleeding

Hi ladies 

I would like some advice / re assurance if I can 

I’m 57 no periods for 2 years ish . Started having weird symptoms amount 2 weeks ago exactly like I did when I was ovulating then 2 weeks to the day after- wham ! A full blown period !! All the symptoms I used to have and feeling pretty *** ! 
spoke to my gp been reffered by fast track but have been told this is standard procedure 

any one else had this ? Can this just happen? Iv obviously googled it to death and made myself feel worse !