5 days late and negative tests

Robyn
I'm 23 being TTC for 6/7 months my period has always been on time and this month it was due on Tuesday went to bed on Monday with cramps was 100% positive Af was coming but never showed have done a test every morning since still nothing not knowing is worse sometimes :( any one else experienced this? Could I still be pregnant ( phoned the doctor said to wait another week)