Ok so today is cycle day 31 of what is normally a 27-28 day cycle I was due to start my period on the 7th but nothing. So this morning I decided to take a clearblue test and it was negative... pictures posted of test below. My nipples have been super sensitive and sore, mild lower back pain. I already have two children and have never experienced morning sickness and still don’t. Could I still be pregnant? And there just isn’t enough HCG to show on a test? How much longer should I wait to take another test? Or schedule a doctors appt?