I’m driving myself mad here. Been TTC number 2 for about 5 months. My periods are always like clockwork and I have a 27 day cycle. Period was due on Wednesday and has not arrived. I had bad cramps on tues night and on and off for Wednesday as well as back pain. I even took two painkillers on wed as I was convinced my period was coming.
Anyway on wed afternoon I did a FRER and it was negative, tried again yesterday morning and got another negative.
Today I am absolutely shattered. This was my first symptom with my DD but I also felt very nauseous early on with her too which I don’t feel now.
I’ll be near a boots tonight and I’m not sure if I should buy more tests or just wait a few more days for my period to arrive 
Has anyone been in a similar situation? What was the outcome?