Hi Sensei
Yes I used to get that when I first started peri( although I didn't know at the time it was peri ) my body and mind felt ready for my period but ............no bleeding !!
When I missed a month I went to the docs and she insisted I do pregnancy test even though I knew I wasn't pregnant !!
Anyway that was 4 years ago and I started missing months on and off but always had the symptons of periods , now I haven't had a period since December but still get a funny tummy around that time of the month !
Anyway best get it checked out by the doc but don't worry about it